Question

a-b= -8 and ab= -12, then a cube -b cube

Answer 1

here's ur answer....

Answer 2

$a \: cube - bc ube = (a -b)(a {}^{2} + ab + b {}^{2} ) \\ 8(a {}^{2} + ( - 12) + b {}^{2} ) \\ 8a {}^{2} - 96 + 8b {}^{2}$