用函数的图象求下列方程的解 X平方－3X+2=0 可拍照回答或录音回答
人气：315 ℃ 时间：2020-01-29 04:08:51
解答
y=x^2-3x+2=(x-3/2)^2-1/4
x=1,x=2
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