The "iv"question
Please answer ASAP
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hey mate!!!
(3a+4b+7) (3a-4b+7)
=3a(3a-4b+7)+4b(3a-4b+7)+7(3a-
4b+7)
=9a2-12ab+21a+12ab-16b2+28b+21a+28b+49
=9a2-16b2+42a+56b+49
have the answer mate!! hope this helps!! ✌✌✌☺☺
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