化简 (x+2)-(x-2分之x^2+2x)
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化简 (x+2)-(x-2分之x^2+2x)
化简 (x+2)-(x-2分之x^2+2x)
化简 (x+2)-(x-2分之x^2+2x)
原式=[(x+2)(x-2)-(x²+2x)]/(x-2)
=(x²-4-x²-2x)/(x-2)
=-(2x+4)/(x-2)
(x+2)-(x-2分之x^2+2x)
=x+2 - x
= 2