解下列不等式.(1)X2-7+12>0(2)-x2-2x+3≥0(3)x2-2x+1<0(4)x2-2x+12<0
问题描述:
解下列不等式.(1)X2-7+12>0(2)-x2-2x+3≥0(3)x2-2x+1<0(4)x2-2x+12<0
答
解下列不等式.(1)X2-7+12>0(2)-x2-2x+3≥0(3)x2-2x+1<0(4)x2-2x+12<0