SOLUTION: I could use some help in understanding this problem from a homework sheet. If f(x)=x^2+2x,find f(-1). thank you.

Question 137853: I could use some help in understanding this problem from a homework sheet. If f(x)=x^2+2x,find f(-1). thank you.
Answer by vleith(2983) (Show Source): You can put this solution on YOUR website!
You are given a function
You then asked to evaluate that function at f(-1).
All you need to do it substitute for x everywhere in the function and then simply the result.

So given an input of , the function evaluates to .
Now let's find f(2)

And so on.
Get it?
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