Question

expand using identities (3x+4y)²

Answer 1

Answer:

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Answer 2

$\huge\tt{\underline{\color{magenta}{Answer}}} \\ \\ using \: identity \: ( a+ b)^{2} = {a}^{2} + 2ab + b ^{2} \\ \\ (3x + 4y)^{2} \\ = (3x) ^{2} + 2(3x)(4y) + (4y) ^{2} \\ = 9x ^{2} + 24xy + 16y^{2}$