verify (3a +2b) ( 3a +2b) = 9a^2+ 12 ab+4b ^2
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LHS
3a (3a + 2b) + 2b(3a + 2b)
= 9a^2 + 6ab + 6ab + 4b^2
= 9a^2 + 12ab + 4b^2
LHS = RHS
Hence proved.
3a (3a + 2b) + 2b(3a + 2b)
= 9a^2 + 6ab + 6ab + 4b^2
= 9a^2 + 12ab + 4b^2
LHS = RHS
Hence proved.
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