Question

a minus b whole cube=a cube minus 3 a square b plus 3ab square minus b cube

Answer 1

Dear student
$(\mathrm{a}-\mathrm{b}{)}^3={\mathrm{a}}^3-{\mathrm{b}}^3-3{\mathrm{a}}^2\mathrm{b}+3{\mathrm{ab}}^2$
Regards