SOLUTION: Let f(x)=4-x^ and g(x)=2-x. Find f(x)-g(x).

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Question 109844: Let f(x)=4-x^ and g(x)=2-x. Find f(x)-g(x).
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
Let f(x)=4-x^.....do you have here x%5E2 or x?
if you have x%5E2, then we have:
f%28x%29=4-x%5E2
and g%28x%29=2-x
to find f%28x%29-g%28x%29.....substitute values for f%28x%29 and g%28x%29
f%28x%29-g%28x%29+=+%284-x%5E2%29+-+%282-x%29.....
f%28x%29-g%28x%29+=+4+-+x%5E2+-+2+%2B+x
f%28x%29-g%28x%29+=+-+x%5E2+%2B+x+%2B+2
if you have x, then we will have:
f%28x%29-g%28x%29+=+%284-x%29+-+%282-x%29.....
f%28x%29-g%28x%29+=+4-x+-+2+%2B+x.....cancel -x and x
f%28x%29-g%28x%29+=+4+-+2+.....
f%28x%29-g%28x%29+=++2+.....