SOLUTION: Given f(x) = 5x2 – 3x + 1, find f(–2).

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Question 68339: Given f(x) = 5x2 – 3x + 1, find f(–2).

Found 2 solutions by funmath, rmromero:
Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
Given f(x) = 5x2 – 3x + 1, find f(–2).
Substitute -2 in for x and simplify:
f%28-2%29=5%28-2%29%5E2-3%28-2%29%2B1
f%28-2%29=5%284%29-3%28-2%29%2B1
f%28-2%29=20%2B6%2B1
highlight%28f%28-2%29=27%29
Happy Calculating!!!

Answer by rmromero(383) About Me  (Show Source):
You can put this solution on YOUR website!
f (x) is often use as a function notation. It doesn't mean f times x rather it refers to the range of the function whose domain is represented by x.
f(x) = 5x^2 – 3x + 1, find f(–2). f(-2) refer to the value of a function when evaluated for a particular element of the domain.
f%28-2%29+=+5%28-2%29%5E2+-+3%28-2%29+%2B+1
f(-2) = 4(5) + 6 + 1
f(-2) = 20 + 6 + 1
f(-2) = 27