Question

Evaluate 102^2 by using the identity (a + b)^2 =a^2 + 2ab +b^2

pls explain and answer

Answer 1

$102 {}^{2} \\ \\ = (100 + 2) {}^{2} \\ \\ = (100) {}^{2} + 2.100.2 + (2) {}^{2} \\ \\ = 10000 + 400 + 4 \\ \\ = 10404$

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Answer 2

Step-by-step explanation:

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