3 years ago

If f(x) = x + 4 and g(x) = x3, what is (gºf)(-3)?

Mathematics

1 answer:

Snowcat [4.5K]3 years ago

7 0

Answer:

gof(x) = x²+8x+15

Step-by-step explanation:

gof(x) = g(f(x))

f(x) = x + 4 and g(x)=x²-1

Substituting

gof(x) = g(f(x)) = g(x + 4) = (x+4)²-1

gof(x) = x²+8x+16 -1 = x²+8x+15

That is if f(x) = x + 4 and g(x)=x²-1, gof(x) = x²+8x+15

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