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2 years ago

Let f(x) = 2x3 – 4x. Find f(-2).

Mathematics

2 answers:

N76 [4]2 years ago

7 0

Answer:

Step-by-step explanation:

f(x) = 2x^3 - 4x.....find f(-2).....so sub in -2 for x

f(-2) = 2(-2^3) - 4(-2)

f(-2) = 2(-8) + 8

f(-2) = -16 + 8

f(-2) = -8 <==

djverab [1.8K]2 years ago

6 0

We have $f(x)=2x^3-4x$ , to find $f(-2)$ put -2 instead of x, $f(-2)=2(-2)^3-4(-2)=-16+8=\boxed{-8}$ .

Hope this helps.

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