Factorise: 121 a^2-88 a b+16 b^2 - Vidyadip

Question

Factorise:
$121 a^2-88 a b+16 b^2$

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Answer

$121 a^2-88 a b+16 b^2$
$=(11 a)^2-2 \times 11 a \times 4 b+4(b)^2$
$=(11 a-4 b)^2$

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