2а^2 - х^2 - ах - а + х

Question

2а^2 - х^2 - ах - а + х

Answer 1

2а^2 - х^2 - ах - а + х
a^2+ a^2 - x^2- ax - a +x
a^2-ax+a^2-a-x^2+x
a(a-x)+a(a-1)-x(x-1)
(a-x)(a-1)(x-1)(a+a-x)
(a-x)(a-1)(x-1)(2a-x)