SOLUTION: Factor completely. Be sure to factor out the greatest common factor first if it is other than 1. 7x^2 - 49xy - 56y^2

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Question 374845: Factor completely. Be sure to factor out the greatest common factor first if it is other than 1.
7x^2 - 49xy - 56y^2

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,

Factoring completely

7x^2 - 49xy - 56y^2 

7(x^2 - 7xy - 8y^2)

7(x- 8y)(x + y)  Note: sum of inner(-8xy) and outer products(xy) = -7xy