1/(2-x)=1/(x-2)-(5-x)/(3x的平方)-12
问题描述:
1/(2-x)=1/(x-2)-(5-x)/(3x的平方)-12
答
1/(2-x)=1/(x-2)-(5-x)/(3x²)-12
(5-x)/3(x-2)(x+2)=2/(x-2)
5-x=6(x+2)
x=-1