Question

2. Find the value of (x+y)² +(x - y)²​

Answer 1

Answer:

2x2+2y2

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

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$Using \: formula \: {(a+b)}^{2} = {a}^{2} + {b}^{2} + 2ab \\ \\ And, \: {(a-b)}^{2} = {a}^{2} + {b}^{2} - 2ab \\ \\ \implies {(x+y)}^{2} + {(x-y)}^{2} \\ \\ \implies {x}^{2} + {y}^{2} \cancel{+ 2xy } + {x}^{2} + {y}^{2} \cancel{- 2xy} \\ \\ \implies 2({x}^{2} + {y}^{2} )$