Question
Factorise the following:$9x^2 - 22xy + 8y^2$
✓
Answer
$9x^2 - 22xy + 8y^2$
$= 9x^2 - 18xy - 4xy + 8y^2$
$= 9x(x - 2y) - 4y(x - 2y)$
$= (x - 2y)(9x - 4y).$
$= 9x^2 - 18xy - 4xy + 8y^2$
$= 9x(x - 2y) - 4y(x - 2y)$
$= (x - 2y)(9x - 4y).$
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