Question 1206001
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Replace x with each input mentioned. 
Use the order of operations (PEMDAS) to simplify.
f(x) = x^3+8x
f(-2) = (-2)^3+8(-2)
f(-2) = -8+8(-2)
f(-2) = -8-16
f(-2) = <font color=red>-24</font>


Similar steps are followed for x = -1, x = 0, and x = 1/2
You are correct in stating that f(0) = 0.


The Desmos calculator can be used to verify.
Type f(x) = x^3+8x into one input box.
Then type f(-2) through f(1/2) to evaluate each input.
See this link for more info:
<a href="https://www.desmos.com/calculator/rorsajdy6w">https://www.desmos.com/calculator/rorsajdy6w</a>
Focus on the calculations in the left-side panel. 
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