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Asked by Anonymous

Suppose that the functions f and g are defined for all real numbers x as follows.f(x)=x+4,g(x)=3x+2.Write the expressions for(f*g)(x) and (f-g)(x) and evaluate (f+g)(4)
10 years ago

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Answered by Steve
these are just simple polynomial addition, subtraction and multiplication.

(f*g)(x) = f(x)*g(x) = (x+4)(3x+2)
and the same for the other operators.
10 years ago

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