<prompt> Kama x 1 x -5, nini ni x 3 1 x 3?  <response>: Ili kupata x3 na 1x3, sisi cubes pande zote mbili za equation x1x-5: -125-53x1x3x33x3x1x3 na Binomial Theorem. Kutoka huko, sisi kurahisisha kwa kutambua kwamba 3x 3x 3x1x 3-5 -15, hivyo tuna: x31x3 -125--15 -110. 