Solve this equation (x-5)²-(x+2)²= -2
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Answer:
(x-5)2=x2+25-10x
(x+2)2=x2+4+4x
(x2+25-10x) - (x2+4+4x)= -2
x2+25-10x-x2-4-4x= -2
-14x+21= -2
-14x=-2-21
-14x=-23
x=23/14
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