解方程.25x²-10x+1=9x²+4mx+4m²=n²
问题描述:
解方程.25x²-10x+1=9
x²+4mx+4m²=n²
答
25x²-10x+1=9
(5x-1)^2=9
5x-1=± 3
x=(1± 3)/5
x1=4/5 x2=-2/5