已知p:2x^2-3x-2≥0.q:x^2-2(a-1)x+a(a-2）≥0,若p是q的充分不必要的条件,求a范围其他的步骤我都会了,麻烦告诉我x²-2(a-1)x+a(a-2）≥0怎么解 注意啊我只要x²-2(a-1)x+a(a-2）≥0怎么解

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