解方程:(X-1)²=100 2(X-1)²=8解方程:(X-1)²=1002(X-1)²=8

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解方程:(X-1)²=100 2(X-1)²=8解方程:(X-1)²=1002(X-1)²=8

解方程:(X-1)²=100 2(X-1)²=8解方程:(X-1)²=1002(X-1)²=8
解方程:(X-1)²=100 2(X-1)²=8
解方程:(X-1)²=100
2(X-1)²=8

解方程:(X-1)²=100 2(X-1)²=8解方程:(X-1)²=1002(X-1)²=8
(X-1)²=100
X-1=±10
X=11 X=-9
2(X-1)²=8
(X-1)²=4
X-1=±2
X=3 X=-1

1、x-1=10或x-1=-10
x=11或x=-9

2、(x-1)²=4
x-1=2或x-1=-2
∴x=3或x=-1