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Gala2k [10]
3 years ago
14

MATH HELP 10 POINTS MUST ANSWER BOTH QUESTIONS

Mathematics
1 answer:
irinina [24]3 years ago
8 0
1st = [ 9,10 ]

2nd = 9
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Answer:

f(g(x)) = 9x^2 + 15x - 6

Step-by-step explanation:

We are using function g(x) = 3x - 1 as the input to function f(x) = x^2 + 7x.

Starting with f(x) = x^2 + 7x, substitute g(x) for x on the left side and likewise substitute x^2 + 7x for each x on the right side.  We obtain:

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If we multiply this out, we get:

f(g(x)) = 9x^2 - 6x + 1 + 21x - 7, or

f(g(x)) = 9x^2 + 15x - 6

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