How do you factor $-36w -wu + 9u + 4w^2$ ?

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Answer 1 · 2015-05-24T03:30:43

$-36w - wu +9u +4w^2$

We can make groups of two to factorise this expression:
$(-36w +9u) +(-wu +4w^2)$

$9$ is common to both the terms in the first group, and $w$ is common to both the terms in the second group

We can write the expression as :
$9(-4w +u) -w(-4w +u)$

$=color(green)((9-w)(-4w+u)$

How do you factor -36w -wu + 9u + 4w^2-36w -wu + 9u + 4w^2?