Factor.
-$x^{2}+4 x y-165 y^{2}$
A) $(x+15 y)(x-11 y)$
B) $(x-15 y)(x+y)$
C) $(x-15 y)(x+11 y)$
D) $(x-y)(x+11 y)$

Name: Factor. -$x^{2}+4 x y-165 y^{2}$ A) $(x+15 y)(x-11 y)$ B) $(x-15 y)(x+y)$ C) $(x-15 y)(x+11 y)$ D) $(x-y)(x+11 y)$
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Question

Quizplus · Accepted Answer

The correct factorization of $x^{2}+4 x y-165 y^{2}$ is found by looking for two numbers that multiply to $-165$ and add to $4$. These numbers are $15$ and $-11$, leading to the factorization $(x+15 y)(x-11 y)$.

Factor - x2+4xy−165y2x^{2}+4 x y-165 y^{2}x2+4xy−165y2 A) (x+15y)(x−11y)(x+15 y)(x-11 y)(x+15y)(x−11y) B) (x−15y)(x+y)(x-15 y)(x+y)(x−15y)(x+y)

Factor
- $x^{2}+4 x y-165 y^{2}$ A) $(x+15 y)(x-11 y)$ B) $(x-15 y)(x+y)$