(x-1)/(x^2+3x+2)+(x+3)/(x^2+7x+12)题目抄错了、是（x+1）/(x^

发布时间：2021-02-21 11:45:15

(x-1)/(x^2+3x+2)+(x+3)/(x^2+7x+12)题目抄错了、是（x+1）/(x^2+3x+2)+(x+3)/(x^2+7x+12)！！！！！

网友回答

(x-1)/(x²+3x+2)+(x+3)/(x²+7x+12)
=(x-1)/(x+1)(x+2)+(x+3)/(x+3)(x+4)
=(x-1)/(x+1)(x+2)+1/(x+4)
楼主没抄错题么?
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