化简:1/x-3+6/9-x^2-x-1/6+2x

发布时间:2021-02-18 11:35:57

化简:1/x-3+6/9-x^2-x-1/6+2x

网友回答

原式=2(x+3)/[2(x+3)(x-3)]-12/[2(x+3)(x-3)]-(x-1)(x-3)/[2(x+3)(x-3)]
=(2x+6-12-x²+4x-3)/[2(x+3)(x-3)]
=-(x²-6x+9)/[2(x+3)(x-3)]
=-(x-3)²/[2(x+3)(x-3)]
=(3-x)/(2x+6)
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