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If a=x+y and b=x-y ,show that (a-b)^2=4y^2​
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If a=x+y and b=x-y ,show that (a-b)^2=4y^2​

User Grll
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1 Answer

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Explanation:


((x + y) - (x - y) ){}^(2) = 4 {y}^(2)


(2y) {}^(2) = 4 {y}^(2)


{2}^(2) {y}^(2) = {4y}^(2)


4 {y}^(2) = 4 {y}^(2)

User Hyuk
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