SOLUTION: If f(x)= 5/2x^2-4 and g(x)=3x+1 find f of g(x)

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Question 811675: If f(x)= 5/2x^2-4 and g(x)=3x+1 find f of g(x)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
If f(x)= (5/2)x^2-4 and g(x)=3x+1 find f of g(x)
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f[g(x)] = f[3x+1] = (5/2)(3x+1)^2-4 = (5/2)(9x^2+6x+1)-4
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= (45/2)x^2 + 15x - (3/2)
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Cheers,
Stan H.