dgue2dgue22
dgue2dgue22
10-10-2017
Mathematics
contestada
f(x) = 3x + 9, g(x) = 3x2
Find (fg)(x)
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mreijepatmat
mreijepatmat
10-10-2017
I guess your g(x) = 3x2 should be g(x) = 3x². If so then:
f(x) = 3x + 9, g(x) = 3x²
find f(g(x)) or f(3x²) , that means replace x in f(x) with x = 3x²
f(g(x)) = f(3x²) = 3(3x²) + 9 → f(g(x))= 9x² + 9
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gabrielbrower
gabrielbrower
10-10-2017
This situation wants you to first multiply f by g.=
(i am going to assume it is 3x squared)
6x(cubed)+27x(squared).
Now put in x for the variable, but since it is already done, that is your answer.
6x(cubed)+27x(squared)
Hope this helped!
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