solve the linear equation
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(x-5)^2-(x+2)^2=-2
x^2-10-10x-x^2+4+4x=-2
-6-6x=-2
-6x=-2/-6
-6x=1/3
x=1/-6×3
x=1/-18
x^2-10-10x-x^2+4+4x=-2
-6-6x=-2
-6x=-2/-6
-6x=1/3
x=1/-6×3
x=1/-18
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