If f(x) = x3 + 4x and g(x) = -2x + 1, then f(g(3))= ?
1 answer:
Answer:
- 145
Step-by-step explanation:
Evaluate g(3) then use the value obtained to evaluate f(x), that is
g(3) = - 2(3) + 1 = - 6 + 1 = - 5 , then
f(- 5) = (- 5)³ + 4(- 5) = - 125 - 20 = - 145
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