解不等式:(x-1)(-2x+3)+2x²>-4-2(x+3)
问题描述:
解不等式:(x-1)(-2x+3)+2x²>-4-2(x+3)
答
(x-1)(-2x+3)+2x²>-4-2(x+3)
-2x²+3x+2x-3+2x²﹥-4-2x-6
5x+2x﹥-10+3
7x﹥-7
x<-17x>-7x<-1?应该是x>-1吧?对写错了不等号