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I need to factorise x^3 + 216 to include (x+6):
(x + 6) \ (x^3 + 216) (lim where x approaches -6)
I broke it down to (x + 6i)(x^2 - 36i) ... but that's no good.
(x + 6) \ (x^3 + 216) (lim where x approaches -6)
I broke it down to (x + 6i)(x^2 - 36i) ... but that's no good.