(1)x^2-3x+1=0 (2)2x^2+6=7x (3)3x^2-9x+2=0 (4)2x^2+

发布时间:2021-02-21 11:45:11

(1)x^2-3x+1=0 (2)2x^2+6=7x (3)3x^2-9x+2=0 (4)2x^2+3x-2=0解方程

网友回答

(1)x^2-3x+1=0
x=(3+√5)/2 x==(3-√5)/2
(2)2x^2+6=7x
x=2 x=3/2
(3)3x^2-9x+2=0
x=(9+√57)/6 x=(9-√57)/6
(4)2x^2+3x-2=0
x=-2 x=1/2
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