SOLUTION: please solve: if f(x)=2x^+1/2x-4, what is f(-1/2)?

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Question 24863: please solve:
if f(x)=2x^+1/2x-4, what is f(-1/2)?
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
Did you mean:
f%28x%29=2x%5E2%2B%281%2F2%29x-4?
f%28-1%2F2%29+=+2%2A%28-1%2F2%29%5E2+%2B+%281%2F2%29%2A%28-1%2F2%29+-4
+f%28-1%2F2%29+=+2%2A%281%2F4%29+-+1%2F4+-+4
f%28-1%2F2%29+=+2%2F4+-+1%2F4+-+16%2F4+=+-15%2F4

R^2 at SCC