Factorization A & sup2; - 2Ab + B & sup2; - 3A + 3b-4

Factorization A & sup2; - 2Ab + B & sup2; - 3A + 3b-4

a² - 2ab + b² - 3a + 3b - 4
= (a² - 2ab + b²) - (3a - 3b) - 4
= (a - b)² - 3(a - b) - 4
= (a - b + 1)(a - b - 4)