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jeka94
3 years ago
5

Evaluate -3x3 - 4x for x = -1. 7 -1 1 PLSSSS HURRRY

Mathematics
1 answer:
enot [183]3 years ago
5 0

<em>When evaluating the function for x = -1 we get that the output equals 7</em>

<h2>Explanation:</h2>

In this exercise, we need to evaluate:

-3x^3-4x \ for \ x = -1

So let's call this a function f(x). So:

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

To evaluate x=-1 we need to substitute this value into the function, so:

f(-1)=-3(-1)^3-4(-1) \\ \\ Solving: \\ \\ f(-1)=-3(-1)+4 \\ \\ Because: \\ \\ (-1)^3=-1 \ and \ -4(-1)=4 \\ \\ f(-1)=3+4 \\ \\ \boxed{f(-1)=7}

Finally, <em>when evaluating the function for x = -1 we get that the output equals 7</em>

<h2>Learn more:</h2>

Roots of a polynomial function: brainly.com/question/1831722

#LearnWithBrainly

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