SOLUTION: By letting y=2-a, simplify the expression 〖(x+2-a)〗^2+〖(2-a-x)〗^2-2(x-2+a)(x+2-a)

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Question 1198895: By letting y=2-a, simplify the expression
〖(x+2-a)〗^2+〖(2-a-x)〗^2-2(x-2+a)(x+2-a)

Found 2 solutions by greenestamps, MathLover1:
Answer by greenestamps(13200)   (Show Source): You can put this solution on YOUR website!




Define y = 2-a



Now define m = x+y and n = x-y



Now go back and replace m, n, and y with their equivalent expressions



ANSWER: 4(2-a)^2 or, equivalently, 4(a-2)^2


Answer by MathLover1(20849)   (Show Source): You can put this solution on YOUR website!

Given:



By letting , simplify the expression


if ,then








go back and replace with

=>answer

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