(x+2)-(x+1)/(x+1)(x+2)=m/x+1 - n/x+2,mn为常数,则mn=?

爱之华章2022-10-04 11:39:541条回答

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罹熵 共回答了24个问题 | 采纳率87.5%
(x+2)-(x+1)/(x+1)(x+2)=m/x+1 - n/x+2
(x+2)/(x+1)(x+2)-(x+1)/(x+1)(x+2)=m/x+1 - n/x+2
1/(x+1)-1/(x+2)=m/x+1 - n/x+2
所以m=n=1
mn=1
1年前

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