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解不等式:(x-1)(x+2)(x-3)>0;
解不等式:(aax-1) (x+2) (x-3)<0 (aa≥0)
解不等式:(x-1)(x+2)(3-x)>0
解不等式:
解不等式:(x-2)2(x-3)3(x+1)<0.