Given f(x)=x2+4x and g(x)=1−x2, find f+g, f−g, fg, and fg.    Enclose numerators and denominators in parentheses. For

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Chapter4: Complex Numbers
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Problem 6ECP: Find a fourth-degree polynomial function f with real coefficients that has 2, 2, and 7i as zeros.
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Given f(x)=x2+4x and g(x)=1−x2, find f+g, f−g, fg, and fg. 

 

Enclose numerators and denominators in parentheses. For example, (a−b)/(1+n).

 

(f+g)(x)=

 

     

(f−g)(x)=

 

     

fg(x)=

 

     

  fg(x)=

 

    

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