解不等式:X²+2X-15>0
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解不等式:X²+2X-15>0
解不等式:X²+2X-15>0
解不等式:X²+2X-15>0
X²+2X-15>0
X²+2X+1>16
(x+1)²>16
|x+1|>4
x>3或x<-5
3 -5