SOLUTION: Evaluate each function for the value specified. f(x) = x^2 - x -2; find f(-2). What are the steps to solve this equation? Any help is appreciated. Thanks.

Algebra ->  Expressions -> SOLUTION: Evaluate each function for the value specified. f(x) = x^2 - x -2; find f(-2). What are the steps to solve this equation? Any help is appreciated. Thanks.      Log On


   

Question 260135: Evaluate each function for the value specified. f(x) = x^2 - x -2; find f(-2).
What are the steps to solve this equation? Any help is appreciated. Thanks.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

f%28x%29=x%5E2-x-2 Start with the given function.


f%28-2%29=%28-2%29%5E2--2-2 Plug in x=-2.


f%28-2%29=%28-2%29%5E2%2B2-2 Simplify.


f%28-2%29=4%2B2-2 Square -2 to get 4.


f%28-2%29=4 Combine like terms.