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4 votes
Express your answer as a polynomial in standard form.

f
(
x
)
=
f(x)=



x

7
−x−7
g
(
x
)
=
g(x)=


3
x
2
+
2
x

4
3x
2
+2x−4
Find:
f
(
g
(
x
)
)
Find: f(g(x))

1 Answer

2 votes

9514 1404 393

Answer:

f(g(x)) = -3x^2 -2x -3

Explanation:

Given:

f(x) = -x-7

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

Find:

f(g(x))

Solution:

Substitute per the function definitions.

f(g(x)) = f(3x^2 +2x -4) = -(3x^2 +2x -4) -7

f(g(x)) = -3x^2 -2x -3

User Amureki
by
8.5k points

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