Ray K.

asked • 09/04/18

Math questions

F(x)=2x+4 and g(x)=x2-2x+1 find g(f(x))

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Naomi S. answered • 09/04/18

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F(x)=2x+4
 
g(x)=x2-2x+1
 
 
 
g(f(x)) = g(2x+4) = (2x+4)2 - 2(2x+4) +1
 
                            = 4x2  + 16x +16 -(4x -8) + 1
 
                            = 4x2  + 16x +16 -4x + 8 +1
 
                             = 4x2  + 12x + 25
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