SOLUTION: This cubic, c(x)=x^3 - 2x^2 - 24x, has zeroes at x = {-2, 0, 6}. What is the value of its local maximum? a. -21 b. 21 c. 126 d. This cannot be determined for a cubic sinc

Question 142026: This cubic, c(x)=x^3 - 2x^2 - 24x, has zeroes at x = {-2, 0, 6}. What is the value of its local maximum?
a. -21
b. 21
c. 126
d. This cannot be determined for a cubic since we do not know calculus
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
This cubic, c(x)=x^3 - 2x^2 - 24x, has zeroes at x = {-2, 0, 6}. What is the value of its local maximum?
a. -21
b. 21
c. 126
d. This cannot be determined for a cubic since we do not know calculus
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Graphing shows a local maximum at x = -2.23967 where f(x) = 32.485381...
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Cheers,
Stan H.
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