Question

(a+b)²
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Answer 1

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Answer 2

Answer:

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(a + b)² = a² + 2ab + b²

$\tt{explaination}$

(a+b)² = (a+b)*(a+b)

(a+b)*(a+b) = a² + ab + ba + b²

(a+b)*(a+b) = a² + b² + 2ab

Hence , (a+b)² = a² + b² + 2ab !!

undoubtedly one of the most famous formulas in mathematics.