SOLUTION: Help!! Solve. (x+18)(x-13)(x+16)>0 I got -18<x<-16 or x>13 Am I right?

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equation Customizable Word Problems -> SOLUTION: Help!! Solve. (x+18)(x-13)(x+16)>0 I got -18<x<-16 or x>13 Am I right?      Log On


   

Question 558372: Help!!
Solve.
(x+18)(x-13)(x+16)>0
I got
-1813
Am I right?
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
-1813 sounds like the answer to a very different problem.
%28x%2B18%29%28x-13%29%28x%2B16%29%3E0 is an inequality.
Solutions to inequalities usually involve a set of infinite values such as x>something or other. I cannot think of any inequality whose answer is a single number.
The solution to %28x%2B18%29%28x-13%29%28x%2B16%29%3E0 is
x%3E13 or -18%3Cx%3C-16
That includes 14, 15, 16, -17, and infinitely more values for x.
You get to the solution by figuring out where each factor is positive and where each factor is negative.