SOLUTION: Hi, For the following problem I got the answer 25x^2+20x+4 but it keeps coming incorrect. Can you help me? Use the function to evaluate the indicated expressions and simplify.

Question 197798: Hi, For the following problem I got the answer 25x^2+20x+4 but it keeps coming incorrect. Can you help me?
Use the function to evaluate the indicated expressions and simplify.
f(x) = -5x + 2
(f(x))^2 = ?
thanks!
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given function

Square both sides

Expand. Remember something like .

FOIL

Multiply

Combine like terms.

So you were off by a sign...
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