Question

What is (29+29)^2 solve using identity?

Answer 1

$(x + {y})^{2} = {x}^{2} + {y}^{2} + 2xy$

is the identity used to solve

answer would be 3364

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Answer 2

$\sf{1. \ (2n)^2=4n^2} \\ \\ \\ \sf{(29+29)^2=(2 \times 29)^2 = 4 \times 29^2 = 4 \times 841 = 3364}$

$\sf{2. (n - 2)^2} \ =\ \sf{n^2-4n+4} \\ \\ \\ \sf{(29+29)^2=58^2=(60-2)^2=60^2-(4 \times 60)+4=3600-240+4=3364}$