Question

A-b whole cube 9class

Answer 1

(a-b) whole cube = a^3 - b^3 -3ab(a-b).

Answer 2

Hi friend

(a-b)^3 = a^3 - b^3 - 3 *a^2* b +3* b^2* a

Or

(a-b)^3 = a^3 - b^3 - 3ab (a - b)

Hope this helps you