sana66115 sana66115

07-11-2021
Mathematics

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(a + b)² = a² + 2ab + b2 with step by step explanation

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lujain792003 lujain792003

07-11-2021

Step-by-step explanation:

Given: (a+b)²

To prove: (a+b)² = a² + 2ab + b²

Proof:-

(a+b)² = (a+b)(a+b)

(a+b)²=a(a+b)+b(a+b)

(a+b)² = a²+ab+ab+b²

(a+b)² = a²+2ab+b².

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