Find the following products: (4a + 5b) × (5a - 6b) - Vidyadip

Question

Find the following products:
$(4a + 5b) × (5a - 6b)$

✓

Answer

$(4a + 5b) × (5a - 6b) $
$=20 a^2-24 a b+25 a b-30 b^2$
$=20 a^2+a b-30 b^2$

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