-6а²+12ab-6b²=-6(a²-2ab+b²)=-6(a-b)²=6(a-b)(b-a).
-6a²+12ab-6b² = -6(a²- 2ab + b²) = - 6(a-b)² = 6(a-b)(b-a)
-6а²+12ab-6b²=-6(a²-2ab+b²)=-6(a-b)²=6(a-b)(b-a).
-6a²+12ab-6b² = -6(a²- 2ab + b²) = - 6(a-b)² = 6(a-b)(b-a)