SOLUTION: If {{{f(x)=4x^2-2x+7}}} what is {{{2x-4x^2-7}}} in terms of f(x)?

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Question 7475: If f%28x%29=4x%5E2-2x%2B7 what is 2x-4x%5E2-7 in terms of f(x)?
Answer by ichudov(499) About Me  (Show Source):
You can put this solution on YOUR website!
Look at them together:
system%28+4x%5E2-2x%2B7%2C+2x-4x%5E2-7%29+
rewrite the second to have terms in the same order
system%28+4x%5E2-2x%2B7%2C+-4x%5E2%2B2x-7%29+
you can see that the second expression is the opposite of the first.
So,
-4x%5E2%2B2x-7+=+-f%28x%29