(x-1)^2=100,求x的值

问题描述:

(x-1)^2=100,求x的值

同时开方
x-1=±10
x=11或x=-9

根号10 + 1

(x-1)^2=100,
x-1=±10
x=1+10=11

x=1-10=-9

(x-1)²=100
x-1=±10
x=1±10
x1=11,x2=-9