EM-127

Factorising common factors

E Math · Secondary 3 · Medium · Factorising common factors

Factorise completely:

9x^2y - 4y^3

.

$y(3x-2y)(3x+2y)$
$(3x-2y)(3x+2y)$
$y(9x-4y)(x+y)$
$y(3x^2-2y^2)$

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