Factorise: 15 a b^2-20 a^2 b - Vidyadip

Question

Factorise:
$15 a b^2-20 a^2 b$

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Answer

$15 a^2-20 a^2 b=5 a b(3 b-4 a)($ HCF of 15 and $20=5)$

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