SOLUTION: Solve with complete explanation please.
{{{ x^2 -1<0}}}
Algebra.Com
Question 793980: Solve with complete explanation please.
Answer by tommyt3rd(5050) (Show Source): You can put this solution on YOUR website!
factor to get
check intervals...
x<-1:
(-)(-) false
-1
(-)(+) true
x>1:
(+)(+) false
solution interval: (-1, 1)
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