Adding and Subtracting Polynomials

A _______ is an algebraic expression containing one term.

Each piece of the polynomial being added is called a _____.

A ______ is the sum or difference of monomials.

The degree of the monomial 

 $2x^2y^3$  is _____. 

The degree of the polynomial

 $2x^4-3x^{ }$   is ____. 

• 1

• 2

• -3

• 4

The degree of the polynomial

 $-8x^3+7x^6$   is _____. 

• -8

• 3

• 6

• 7

• 9

Find the sum by combining like terms:

 $\left(4x^2+x+7\right)+\left(2x^2+3x+1\right)$  

•  $6x^2+3x+8$  

•  $6x^2+4x+8$  

•  $6x^4+3x^2+8$  

•  $6x^4+4x^2+8$  

Find the difference by combining like terms.

 $\left(3x^3-x^2+8\right)-\left(x^3+5x^2+4x-7\right)$  

•  $2x^3-6x^2-4x+1$  

•  $2x^3+4x^2-4x+15$  

•  $2x^3+4x^2-4x+1$  

•  $2x^3-6x^2-4x+15$  

Combine like terms:

 $2x^3-5x+4x^3-2x$  

•  $6x^3-3x$  

•  $6x^3-7x$  

•  $6x^6-7x$  

•  $6x^6-3x$  

Find the difference by combining like terms: 

 $3x+6y-\left(4x-2y\right)$  

•  $-x+8y$  

•  $7x+8y$  

•  $7x+4y$  

•  $-x+4y$