Finding the GCF of Polynomials

What is the GCF of 4 and 28?

• 2

• 7

• -4

• 4

What is the GCF of the expression:

 $2x^{4\ }+\ 8x^{3\ }$  

• 2x

•  $2x^{3\ }$  

•  $4x^2$  

What is the GCF of

 $4x^{2\ }-12x+36$  

(a)  

Rewrite the trinomial in factored form

 $x^{2\ }-2x-15$  

•  $\left(x+3\right)\left(x-5\right)$  

•  $\left(x-3\right)\left(x+5\right)$  

•  $\left(x+1\right)\left(x-2\right)$  

What is the GCF of: 

 $6x^{2\ }-24$  

• 4x

• 2

• 6

• -6

Rewrite the binomial in factored form:

 $6x^{2\ }-24$  

•  $\left(3x-12\right)\left(3x+2\right)$  

•  $6\left(x^{2\ }-4\right)$  

•  $6\left(x+2\right)\left(x-2\right)$