Question

idendity square for a bionimial evaluate (402)
$identiy \: square \: for \: bionomial \: evaluate(402) {}^{2}$
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Answer 1

Answer:

By (a+b)²

(400 + 2)²

(400)² + 2*400*2 + (2)²

1600 + 1600 + 4

3202