Question

am^2-2m^2-ba+2b+2a-a^2

Answer 1

am²-2m²-ba+2b+2a-a² = (am²-2m²)+(-ba+2b)+(2a-a²) = m²(a-2)-b(a-2)-a(a-2) = (a-2)(m²-b-a)