Question

factorise 3a²-27b²
pls solve full sum​

Answer 1

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$⇒\:{3a}^{2}\:–\:{27b}^{2}$

$⇒\:{3a}^{2}\:–\:{(9b)}^{2}$

$⇒\:3({a}^{2}\:–\:{9b}^{2})$