Question

expand (x+2y3z)^2 using suitable identity​

Answer 1

SOLUTION::)

$expand..(x + 2y3z)^{2} \\ identity = > ( a + b)^{2} = a^{2} + 2ab + b^{2} \\ \\ here.. \\ a = x \\ b = 2y3z \\ \\ to \: expand.. \\ (x + 2y3z)^{2} = (x)^{2} + 2 \times x \times 2y3z + (2y3z)^{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = x ^{2} + 12xyz + 4y ^{2} 9z ^{2}$

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