SOLUTION: I solved the equation x^2-8x-9<=0 as -1<=x<=9 I don't know how to write that in interval notation.

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Question 248026: I solved the equation
x^2-8x-9<=0
as
-1<=x<=9
I don't know how to write that in interval notation.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
The general inequality a%3C=x%3C=b can be written as in interval notation. So just substitute in a=-1 and b=9 to rewrite -1%3C=x%3C=9 into