Question 320624
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This is the sum of two cubes.  Memorize the pattern for the sum and difference of two cubes:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ a^3\ \pm\ b^3\ =\ (a\ \pm\ b)\left(a^2\ \mp\ 2ab\ +\ b^2\right)]


Then recognize that


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 8x^3\ =\ (2x)^3]


and


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 64\ =\ 4^3]


You should be able to take it from here.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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