Solved

Factor
- $x^{2}-4 x y-21 y^{2}$ A) $(x-7 y)(x+3 y)$ B) $(x-y)(x+3 y)$

Question 57

Multiple Choice

Factor.
- $x^{2}-4 x y-21 y^{2}$

A) $(x-7 y) (x+3 y)$
B) $(x-y) (x+3 y)$
C) $(x+7 y) (x-3 y)$
D) $(x-7 y) (x+y)$

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