(a+b)(a-b)=a square -b square.

Here is the cubic formula, by the way, write it down.

A cube +b cube =(a+b)(a square -ab+b square)

A cube -b cube =(a-b)(a square +ab+b square)

(a+b) Cube =a Cube +3a Cube b+3ab Cube +b Cube

(a-b) Cube =a Cube -3a Cube b+3ab Cube -b Cube

(a+b+c) Cube = Party A+Party B+Party C +2ab+2bc+2ac