利用图象判断方程2分之X平方=3X-2是否有解若有解写出来 结果精确到0.1
人气:317 ℃ 时间:2020-03-24 06:28:56
解答
x²/2=3x-2,
x²=2(3x-2),移项得,
x²-6x+4=0,
△=(-6)²-4×1×4=20>0,
所以原方程有两个不相等的实数根,所以图像和x轴有两个交点,所以原方程有两个解.
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