8-x)^2=x^2+16怎么解
问题描述:
8-x)^2=x^2+16怎么解
答
(8-x)^2=x^2+16
64-16x+x^2=x^2+16
64-16x=16
16x=64-16
16x=48
x=48/16
x=3