x^2+(64-4x 4 )^2=160 X等于多少

问题描述:

x^2+(64-4x 4 )^2=160 X等于多少
x^2+(64-4x/ 4 )^2=160

x^2+(64-4x/ 4 )^2=160
x^2+(16-x)^2=160
x^2+x^2-32x+256=160
2x^2-32x+96=0
x^2-16x+48=0
(x-4)(x-12)=0
x1=4 x2=12