Factorise: 4 x^2-9 y^2 - Vidyadip

Question

Factorise:
$4 x^2-9 y^2$

✓

Answer

$4 x^2-9 y^2$
$=(2 x)^2-(3 y)^2$
$=(2 x+3 y)(2 x-3 y)$
$\{\because a^2- b^2= (a + b)(a - b)\}$

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