If f(x) = x^2 + 2x – 4 and g(x) = 3x + 1 Find f(g(x)) = 9x^2 + [ ? ]x+ [?]

Octavia Togami asked Sep 17, 2022

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24 votes

If

f(x) = x^2 + 2x – 4
and
g(x) = 3x + 1
Find
f(g(x)) = 9x^2 + [ ? ]x+ [?]

Octavia Togami asked Sep 17, 2022

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22 votes

Explanation:

f(g(x))=(3x+1)^2 +2(3x+1) -4

=9x^2 +6x +1 +6x +2 -4

=9x^2 +12x +(-1)

Cortex answered Sep 23, 2022

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