<< Chapter < Page Chapter >> Page >

4 x 3 y 5 2 x y 3 is a binomial of degree 8. The degree of the first term is 8.

Got questions? Get instant answers now!

3 x + 10 is a binomial of degree 1.

Got questions? Get instant answers now!

Linear quadratic cubic

Polynomials of the first degree are called linear polynomials.
Polynomials of the second degree are called quadratic polynomials.
Polynomials of the third degree are called cubic polynomials.
Polynomials of the fourth degree are called fourth degree polynomials.
Polynomials of the n th degree are called n th degree polynomials.
Nonzero constants are polynomials of the 0th degree.

Some examples of these polynomials follow:

4 x 9 is a linear polynomial.

Got questions? Get instant answers now!

3 x 2 + 5 x 7 is a quadratic polynomial.

Got questions? Get instant answers now!

8 y 2 x 3 is a cubic polynomial.

Got questions? Get instant answers now!

16 a 2 32 a 5 64 is a 5th degree polynomial.

Got questions? Get instant answers now!

x 12 y 12 is a 12th degree polynomial.

Got questions? Get instant answers now!

7 x 5 y 7 z 3 2 x 4 y 7 z + x 3 y 7 is a 15th degree polynomial. The first term is of degree 5 + 7 + 3 = 15 .

Got questions? Get instant answers now!

43 is a 0th degree polynomial.

Got questions? Get instant answers now!

Classification of polynomial equations

As we know, an equation is composed of two algebraic expressions separated by an equal sign. If the two expressions happen to be polynomial expressions, then we can classify the equation according to its degree. Classification of equations by degree is useful since equations of the same degree have the same type of graph. (We will study graphs of equations in Chapter 6.)

The degree of an equation is the degree of the highest degree expression.

Sample set a

x + 7 = 15 .

This is a linear equation since it is of degree 1, the degree of the expression on the left of the " = " sign.

Got questions? Get instant answers now!

5 x 2 + 2 x 7 = 4 is a quadratic equation since it is of degree 2.

Got questions? Get instant answers now!

9 x 3 8 = 5 x 2 + 1 is a cubic equation since it is of degree 3. The expression on the left of the " = " sign is of degree 3.

Got questions? Get instant answers now!

y 4 x 4 = 0 is a 4th degree equation.

Got questions? Get instant answers now!

a 5 3 a 4 = a 3 + 6 a 4 7 is a 5th degree equation.

Got questions? Get instant answers now!

y = 2 3 x + 3 is a linear equation.

Got questions? Get instant answers now!

y = 3 x 2 1 is a quadratic equation.

Got questions? Get instant answers now!

x 2 y 2 4 = 0 is a 4th degree equation. The degree of x 2 y 2 4 is 2 + 2 = 4 .

Got questions? Get instant answers now!

Practice set a

Classify the following equations in terms of their degree.

3 x + 6 = 0

first, or linear

Got questions? Get instant answers now!

9 x 2 + 5 x 6 = 3

quadratic

Got questions? Get instant answers now!

25 y 3 + y = 9 y 2 17 y + 4

cubic

Got questions? Get instant answers now!

5 x 7 = 3 x 5 2 x 8 + 11 x 9

eighth degree

Got questions? Get instant answers now!

Exercises

For the following problems, classify each polynomial as a monomial, binomial, or trinomial. State the degree of each polynomial and write the numerical coefficient of each term.

5 x + 7

binomial; first (linear); 5 , 7

Got questions? Get instant answers now!

4 x 2 + 9

binomial; second (quadratic); 4 , 9

Got questions? Get instant answers now!

a 4 + 1

binomial; fourth; 1 , 1

Got questions? Get instant answers now!

5 x

monomial; first (linear); 5

Got questions? Get instant answers now!

5 x 3 + 2 x + 3

trinomial; third (cubic); 5 , 2 , 3

Got questions? Get instant answers now!

41 a 3 + 22 a 2 + a

trinomial; third (cubic); 41 , 22 , 1

Got questions? Get instant answers now!

2 c 6 + 0

monomial; sixth; 2

Got questions? Get instant answers now!

9 g

monomial; first (linear); 9

Got questions? Get instant answers now!

3 y z 6 y + 11

trinomial; second (quadratic); 3 , 6 , 11

Got questions? Get instant answers now!

7 a b 2 c 2 + 2 a 2 b 3 c 5 + a 14

Got questions? Get instant answers now!

x 4 y 3 z 2 + 9 z

binomial; ninth; 1 , 9

Got questions? Get instant answers now!

6 + 3 x 2 y 5 b

binomial; eighth; 6 , 3

Got questions? Get instant answers now!

9 + 3 x 2 + 2 x y 6 z 2

Got questions? Get instant answers now!

3 x 2 y 0 z 4 + 12 z 3 , y 0

Got questions? Get instant answers now!

4 x y 3 z 5 w 0 , w 0

monomial; ninth; 4

Got questions? Get instant answers now!

Classify each of the equations for the following problems by degree. If the term linear, quadratic, or cubic applies, state it.

9 z = 12 x 18

linear

Got questions? Get instant answers now!

y 5 + y 3 = 3 y 2 + 2

cubic

Got questions? Get instant answers now!

x 2 + x 4 = 7 x 2 2 x + 9

Got questions? Get instant answers now!

2 y + 5 x 3 + 4 x y = 5 x y + 2 y

quadratic

Got questions? Get instant answers now!

8 a + 2 b = 4 b 8

linear

Got questions? Get instant answers now!

2 x 5 8 x 2 + 9 x + 4 = 12 x 4 + 3 x 3 + 4 x 2 + 1

Got questions? Get instant answers now!

x + 3 x 5 = x + 2 x 5

fifth degree

Got questions? Get instant answers now!

3 x 2 y 4 + 2 x 8 y = 14

Got questions? Get instant answers now!

10 a 2 b 3 c 6 d 0 e 4 + 27 a 3 b 2 b 4 b 3 b 2 c 5 = 1 , d 0

19th degree

Got questions? Get instant answers now!

The expression 4 x 3 9 x 7 is not a polynomial because

Got questions? Get instant answers now!

The expression a 4 7 a is not a polynomial because

. . . there is a variable in the denominator

Got questions? Get instant answers now!

Is every algebraic expression a polynomial expression? If not, give an example of an algebraic expression that is not a polynomial expression.

Got questions? Get instant answers now!

Is every polynomial expression an algebraic expression? If not, give an example of a polynomial expression that is not an algebraic expression.

yes

Got questions? Get instant answers now!

How do we find the degree of a term that contains more than one variable?

Got questions? Get instant answers now!

Exercises for review

( [link] ) Use algebraic notation to write “eleven minus three times a number is five.”

11 3 x = 5

Got questions? Get instant answers now!

( [link] ) Simplify ( x 4 y 2 z 3 ) 5 .

Got questions? Get instant answers now!

( [link] ) Find the value of z if z = x u s and x = 55 , u = 49 , and s = 3 .

z = 2

Got questions? Get instant answers now!

( [link] ) List, if any should appear, the common factors in the expression 3 x 4 + 6 x 3 18 x 2 .

Got questions? Get instant answers now!

( [link] ) State (by writing it) the relationship being expressed by the equation y = 3 x + 5 .

The value of y is 5 more then three times the value of  x .

Got questions? Get instant answers now!

Questions & Answers

Three charges q_{1}=+3\mu C, q_{2}=+6\mu C and q_{3}=+8\mu C are located at (2,0)m (0,0)m and (0,3) coordinates respectively. Find the magnitude and direction acted upon q_{2} by the two other charges.Draw the correct graphical illustration of the problem above showing the direction of all forces.
Kate Reply
To solve this problem, we need to first find the net force acting on charge q_{2}. The magnitude of the force exerted by q_{1} on q_{2} is given by F=\frac{kq_{1}q_{2}}{r^{2}} where k is the Coulomb constant, q_{1} and q_{2} are the charges of the particles, and r is the distance between them.
Muhammed
What is the direction and net electric force on q_{1}= 5µC located at (0,4)r due to charges q_{2}=7mu located at (0,0)m and q_{3}=3\mu C located at (4,0)m?
Kate Reply
what is the change in momentum of a body?
Eunice Reply
what is a capacitor?
Raymond Reply
Capacitor is a separation of opposite charges using an insulator of very small dimension between them. Capacitor is used for allowing an AC (alternating current) to pass while a DC (direct current) is blocked.
Gautam
A motor travelling at 72km/m on sighting a stop sign applying the breaks such that under constant deaccelerate in the meters of 50 metres what is the magnitude of the accelerate
Maria Reply
please solve
Sharon
8m/s²
Aishat
What is Thermodynamics
Muordit
velocity can be 72 km/h in question. 72 km/h=20 m/s, v^2=2.a.x , 20^2=2.a.50, a=4 m/s^2.
Mehmet
A boat travels due east at a speed of 40meter per seconds across a river flowing due south at 30meter per seconds. what is the resultant speed of the boat
Saheed Reply
50 m/s due south east
Someone
which has a higher temperature, 1cup of boiling water or 1teapot of boiling water which can transfer more heat 1cup of boiling water or 1 teapot of boiling water explain your . answer
Ramon Reply
I believe temperature being an intensive property does not change for any amount of boiling water whereas heat being an extensive property changes with amount/size of the system.
Someone
Scratch that
Someone
temperature for any amount of water to boil at ntp is 100⁰C (it is a state function and and intensive property) and it depends both will give same amount of heat because the surface available for heat transfer is greater in case of the kettle as well as the heat stored in it but if you talk.....
Someone
about the amount of heat stored in the system then in that case since the mass of water in the kettle is greater so more energy is required to raise the temperature b/c more molecules of water are present in the kettle
Someone
definitely of physics
Haryormhidey Reply
how many start and codon
Esrael Reply
what is field
Felix Reply
physics, biology and chemistry this is my Field
ALIYU
field is a region of space under the influence of some physical properties
Collete
what is ogarnic chemistry
WISDOM Reply
determine the slope giving that 3y+ 2x-14=0
WISDOM
Another formula for Acceleration
Belty Reply
a=v/t. a=f/m a
IHUMA
innocent
Adah
pratica A on solution of hydro chloric acid,B is a solution containing 0.5000 mole ofsodium chlorid per dm³,put A in the burret and titrate 20.00 or 25.00cm³ portion of B using melting orange as the indicator. record the deside of your burret tabulate the burret reading and calculate the average volume of acid used?
Nassze Reply
how do lnternal energy measures
Esrael
Two bodies attract each other electrically. Do they both have to be charged? Answer the same question if the bodies repel one another.
JALLAH Reply
No. According to Isac Newtons law. this two bodies maybe you and the wall beside you. Attracting depends on the mass och each body and distance between them.
Dlovan
Are you really asking if two bodies have to be charged to be influenced by Coulombs Law?
Robert
like charges repel while unlike charges atttact
Raymond
What is specific heat capacity
Destiny Reply
Specific heat capacity is a measure of the amount of energy required to raise the temperature of a substance by one degree Celsius (or Kelvin). It is measured in Joules per kilogram per degree Celsius (J/kg°C).
AI-Robot
specific heat capacity is the amount of energy needed to raise the temperature of a substance by one degree Celsius or kelvin
ROKEEB
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




Source:  OpenStax, Elementary algebra. OpenStax CNX. May 08, 2009 Download for free at http://cnx.org/content/col10614/1.3
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Elementary algebra' conversation and receive update notifications?

Ask