Question

A + a² -b - b ² = ???????????

Answer 1

(а-в)+ (а^2-в^2)=(а-в)+(а+в)=(а-в)(1+а+в)

Answer 2

(a -b) +(a² -b²) =(a -b) +(a -b)(a +b) =(a -b)(1 +a +b)