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How do you factor $x^2-xy-2y^2$ ?

1 Answer

Jul 29, 2016

$=(x+y)(x-2y)$

Explanation:

$x^2-xy-2y^2$
$=x^2-2xy+xy-2y^2$
$=x(x-2y)+y(x-2y)$
$=(x+y)(x-2y)$

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