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zepelin [54]
3 years ago
14

HELP ASAP PLEASE!!!!

Mathematics
1 answer:
Pie3 years ago
8 0

Answer:

D

Step-by-step explanation:

Substitute x = g(x) into f(x)

f(2x + 3) = (2x + 3)² ← expand factors

f(g(x)) = (2x)² + 6x + 6x + 3² = 4x² + 12x + 9 → D

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