x*x*(1/4)=20x
问题描述:
x*x*(1/4)=20x
答
两边乘4
x²-80x=0
x(x-80)=0
x=0,x=80
x*x*(1/4)=20x
两边乘4
x²-80x=0
x(x-80)=0
x=0,x=80