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Sum/Diff of Perfect Cube?

Factor: x^3+64 I don't have a calculator and this is the first year I took algebra

Answers (2)

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a^3 + b^3 = (a + b) (a^2 - ab + b^2)

a^3 - b^3 = (a - b) (a^2 +ab + b^2)

SO

(x + 4) ( x^2 - 4x + 16)

Reference: I've done it in school, and i have a reference table with a lot of these formulas that I keep handy.