f For the functions f(x)=3-x and g(x)=x + 2x63, find f+g, f-g, fg, and g function....

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f For the functions f(x)=3-x² and g(x)=x² + 2x−63, find f+g, f-g, fg, and g function. (f+g)(x) = (Simplify your answer.) Determine the domain for each f For the functions f(x)=3-x² and g(x)=x² + 2x−63, find f+g, f-g, fg, and g function. (f+g)(x) = (Simplify your answer.) Determine the domain for each