解不等式﹙x+1﹚²+3﹙x-1﹚-4>0
问题描述:
解不等式﹙x+1﹚²+3﹙x-1﹚-4>0
答
﹙x+1﹚²+3﹙x-1﹚-4>0
x²+2x+1+3x-3-4>0
x²+5x-6>0
(x-6)(x+1)>0
x>6或x