Factor the polynomial completely.
A) (8 + y ) (8 + 7 y )
B) (8 - 7 y ) (8 + 7 y )
C) (64 - 7 y ) (64 + 7 y )
D) (8 - 49 y ) (8 + 49 y )

Question

Factor the polynomial completely. 
A) (8 + y ) (8 + 7 y ) 
B) (8 - 7 y ) (8 + 7 y ) 
C) (64 - 7 y ) (64 + 7 y ) 
D) (8 - 49 y ) (8 + 49 y )

Quizplus · Accepted Answer

The polynomial is in the form of a difference of squares: (a-b)(a+b), where a=8 and b=7y. Therefore, factoring the polynomial gives (8-7y)(8+7y). Option A is incorrect because it has the wrong signs for the second factor. Option C has a 64 instead of 8 as the first factor. Option D has the wrong signs for both factors.

Factor the Polynomial Completely