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

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Answer 1 · 2015-05-24T03:30:43

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

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

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

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

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

How do you factor −36w−wu+9u+4w2-36w -wu + 9u + 4w^2?