怎么把(x-2)²分之3-x²+1化简为2-x分之x+2
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/11 21:48:02
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怎么把(x-2)²分之3-x²+1化简为2-x分之x+2
怎么把(x-2)²分之3-x²+1化简为2-x分之x+2
怎么把(x-2)²分之3-x²+1化简为2-x分之x+2
分子:3-X2+1 = -X2+4 = -(X2-4) = - (X+2)(X-2)
分母: (x-2)2
分子分母月掉一个 (x-2)
可得:-(x-2) / x+2 = 2-x / x+2