10-4(x的二次方+x-3)≤2(-2x的二次方+x-1)
人气：195 ℃ 时间：2019-10-17 02:11:02
解答
10-4(x的二次方+x-3)≤2(-2x的二次方+x-1)
10-4x² -4x+12≤-4x² +2x-2
22-4x≤2x-2
2x+4x≥22+2
6x≥24
x≥4
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