x²-3x+2＞0 x²-2x-3≤0 |x-1|≤3x²-3x+2＞0 x²-2x-3≤0 |x-1|≤3 |2x+5|＞7
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x²-3x+2＞0x²-2x-3≤0|x-1|≤3x²-3x+2＞0x²-2x-3≤0|x-1|≤3|2x+5|＞7x²-3x+2＞0x²-
x²-3x+2＞0 x²-2x-3≤0 |x-1|≤3x²-3x+2＞0 x²-2x-3≤0 |x-1|≤3 |2x+5|＞7
x²-3x+2＞0 x²-2x-3≤0 |x-1|≤3
x²-3x+2＞0 x²-2x-3≤0
|x-1|≤3 |2x+5|＞7
x²-3x+2＞0 x²-2x-3≤0 |x-1|≤3x²-3x+2＞0 x²-2x-3≤0 |x-1|≤3 |2x+5|＞7
太简单了吧