解方程x^2+2mx-n^2=0(x为未知数)
问题描述:
解方程x^2+2mx-n^2=0(x为未知数)
答
x^2+2mx-m^2=0
(x-m)^2=0
x=m
解方程x^2+2mx-n^2=0(x为未知数)
x^2+2mx-m^2=0
(x-m)^2=0
x=m