解不等式x²-6x-7>0
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解不等式x²-6x-7>0
解不等式x²-6x-7>0
解不等式x²-6x-7>0
x²-6x-7>0
(x+1)(x-7)>0
x<-1或者x>7
(x+1)(x-7)>0
x>7或x<-1
解不等式x²-6x-7>0
解不等式x²-6x-7>0
解不等式x²-6x-7>0
x²-6x-7>0
(x+1)(x-7)>0
x<-1或者x>7
(x+1)(x-7)>0
x>7或x<-1