webbrachel74 webbrachel74

25-10-2018
Mathematics

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Find f(g(x)) if f(x) = 3x + 1 and g(x) = x2 - 1.

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wegnerkolmp2741o wegnerkolmp2741o

25-10-2018

Substitute g(x) into f(x) every place you see an x

3(g(x) )+1

3(x^2-1) +1

distribute

3x^2 -3 +1

combine like terms

3x^2 -2

Answer: 3x^2 -2

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