SOLUTION: Can you please explain...I tried working it myself, but did not come up with correct answer...instructions...given f(x) = 5x^2-3x+1, find f(-2). 5x^2-3(-2)+1 -20+6+1 -14+1=-13

Algebra ->  Algebra  -> Functions -> SOLUTION: Can you please explain...I tried working it myself, but did not come up with correct answer...instructions...given f(x) = 5x^2-3x+1, find f(-2). 5x^2-3(-2)+1 -20+6+1 -14+1=-13      Log On

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Question 70151: Can you please explain...I tried working it myself, but did not come up with correct answer...instructions...given f(x) = 5x^2-3x+1, find f(-2).
5x^2-3(-2)+1
-20+6+1
-14+1=-13
did I do this correctly?

Answer by jim_thompson5910(28476) About Me  (Show Source):
You can put this solution on YOUR website!
When you square a negative number its going to be positive, not negative.
5%28-2%29%5E2-3%28-2%29%2B1
5%2A4%2B6%2B1
20%2B7=27