1/(x^2+7x)-1/(x^2+7x)+1/(x^2+7X+18)-1/(x^2+7X+12)=0
问题描述:
1/(x^2+7x)-1/(x^2+7x)+1/(x^2+7X+18)-1/(x^2+7X+12)=0
求X
答
x=15
1/(x^2+7x)-1/(x^2+7x)+1/(x^2+7X+18)-1/(x^2+7X+12)=0
求X
x=15