解方程(1/x+2)+(2x^2/x^2-4)=2.
问题描述:
解方程(1/x+2)+(2x^2/x^2-4)=2.
答
(1/x+2)+(2x^2/x^2-4)=2 两边乘x^2-4=(x+2)(x-2)
x-2+2x^2=2x^2-8
x-2=-8
x=-6