25X(x-1)²=4

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25X(x-1)²=4
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25X(x-1)²=4
25X(x-1)²=4

25X(x-1)²=4
25(X-1)^2=4
(X-1)^2=4/25
x-1=±2/5
x=3/5或x=7/5

原式=(x-1)²=4/25
x-1=2/5或者-2/5
x=7/5或者3/5

(x-1)^2=4/25
(x-1)^2=4/25
x-1=2/5 x=7/5
x-1=-2/5 x=3/5