SOLUTION: Find the excluded values for the algebraic fraction. Please show work. x+6/x^2+3x-18

Algebra ->  Expressions-with-variables -> SOLUTION: Find the excluded values for the algebraic fraction. Please show work. x+6/x^2+3x-18      Log On


   

Question 1005934: Find the excluded values for the algebraic fraction. Please show work.
x+6/x^2+3x-18
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
For %28x%2B6%29%2F%28x%5E2%2B3x-18%29 we factor the denominator and see what values make it go to the forbidden zero...so
%28x%2B6%29%2F%28x%5E2%2B3x-18%29+=+%28x%2B6%29+%2F+%28x%2B6%29%28x-3%29
so x = -6 and x = 3 are not allowed...