(x+1)(x-1)(x+5)大于0

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(x+1)(x-1)(x+5)大于0(x+1)(x-1)(x+5)大于0(x+1)(x-1)(x+5)大于0x>1或-5(x+1)(x-1)(x+5)>0-51

(x+1)(x-1)(x+5)大于0
(x+1)(x-1)(x+5)大于0

(x+1)(x-1)(x+5)大于0
x>1 或 -5

(x+1)(x-1)(x+5)>0
-51