Question

find the cube of 3b + 7b​

Answer 1

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Answer:-

$(3a+7b){}^{3}$

$3a{}^{3}+7b{}^{3}+3×3a×7b(3a+7b)$

=>$27a{}^{3}+343b{}^{3}+63ab(3a+7b)$

=>$27a{}^{3}+343b{}^{3}+189a{}^{2}b+441ab{}^{2}$

Hope it's help uh