2x^2=25 4(x-2)^2=9
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2x^2=25 4(x-2)^2=9
2x^2=25 4(x-2)^2=9
2x^2=25 4(x-2)^2=9
![2x^2=25 4(x-2)^2=9](/uploads/image/z/19869979-67-9.jpg?t=2x%5E2%3D25+4%28x-2%29%5E2%3D9)
2x^2=25
x^2=25 /2
x=±5/(根号2)
x=±5根号2/2
4(x-2)^2=9
(x-2)^2=9/4
x-2=±3/2
x=2±3/2
所以x=7/2或者x=1/2
x^2=25 /2
x=±5/(根号2)
x=±5根号2/2
4(x-2)^2=9
(x-2)^2=9/4
x-2=±3/2
x=2±3/2
所以x=7/2或者x=1/2
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