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Let f\ a n d\ g\ be real functions defi...

Let `f\ a n d\ g\ ` be real functions define by `f(x)=x+2` and `g(x)=4-x^2dot` Then, find each of the following function: `f-g`

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`f(x)+g(x)=(x+2)-(4-x^2)`
`=x+2-4+x^2`
`=x-2+x^2`
`=x^2+x-2`
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