Question
Factorise $: 9x^2 + 18x + 8$
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Answer
$9x^2 + 18x + 8$
$= 9x^2 + 12x + 6x + 8$
$= 3x(3x+ 4) +2(3x + 4)$
$= (3x + 4)(3x + 2)$
$= 9x^2 + 12x + 6x + 8$
$= 3x(3x+ 4) +2(3x + 4)$
$= (3x + 4)(3x + 2)$
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