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数学
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因式分解法 解下列方程 0.1x2-1.2x2=0.4x
人气:454 ℃ 时间:2019-09-29 08:02:23
解答
0.1x2-1.2x2=0.4x
-1.1x²=0.4x
11x²+4x=0
x(11x+4)=0
x1=0 x2=-4/11
如果本题有什么不明白可以追问,请及时点击右下角的【采纳为满意回答】按钮可答案为什么是x1=-6,x2=2呢你抄错题了吧,哦,不好意思是0.1x2-1.2=0.4x0.1x2-1.2=0.4xx2-12=4xx2-4x-12=0(x-6)(x+2)=0x1=6x2=-2
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