Question

(a+b)² + (a-b)²= what is answer ​

Answer 1

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Answer 2

Answer:

2a^2+2b^2

Step-by-step explanation:

$(a + b )^2 = a^2 + b^2 + 2ab \\( a - b)^2 = a^2 - b^2 - 2ab \\ in \: place \: of(a + b)^2 and(a - b)^2 \\ we \: will \: write \: this \: a^2 + b^2 + 2ab \\ and \: this \: a^2 - b^2 - 2ab \\ now \: a^2+b^2 + 2ab +a^2+b^2- \\ 2ab \\ 2ab \: and - 2ab \: will \: canceled \\ {a}^{2} +b^{2} + {a}^{2} + {b}^{2} \\2 {a}^{2} + 2 {b}^{2}$

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