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(1)2x^2+3=5x (2)4x^2-7x+2=0
人气:381 ℃ 时间:2020-01-27 18:29:37
解答
(1)2x^2+3=5x
2x^2-5x+3=0
(2x-3)(x-1)=0
x1=3/2 x2=1
(2)4x^2-7x+2=0
(4x-1)(x-2)=0
x1=1/4 x2=2
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