For all real and positve numbers p and q, the following identity holds:
(p^1/3 - q^1/3)(p^2/3 +(p^1/3)(q^1/3) + q^2/3) = (p - q)
Does this identity still hold for negative p and/or q?
(p^1/3 - q^1/3)(p^2/3 +(p^1/3)(q^1/3) + q^2/3) = (p - q)
Does this identity still hold for negative p and/or q?