SOLUTION: I have to find all the real number solutions of: x^3-216=0 but I am not sure how to go about it. I know there are three solutions and one or more may be imaginary.

SOLUTION: I have to find all the real number solutions of: x^3-216=0 but I am not sure how to go about it. I know there are three solutions and one or more may be imaginary.

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Question 243440: I have to find all the real number solutions of:
x^3-216=0
but I am not sure how to go about it. I know there are three solutions and one or more may be imaginary.
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
I have to find all the real number solutions of:
x^3 - 216 = 0
:
This can be factored as the "difference of cubes" (-216 = -6^3)
(x - 6)(x^2 + 6x + 36)
the real solution: x = 6
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