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OpenStudy (anonymous):

how do you solve.... x^3 -216=0 ??

OpenStudy (anonymous):

Whenever you have an equation, you can do the same thing to both sides, and they will remain equal. So: \[x^3 - 216 = 0\] Now add 216 to both sides: \[x^3 = 216\] Finally take the cube root of both sides: \[x = 6\]

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