Can you solve this math problem please?

4a(squared) over a-b, minus, 4b(squared) -8ab over b-a

Thank you for help!

4a²/(a-b) - (4b²-8ab)/(b-a)

a-b=-(-a+b)=-(b-a)

4a²/(a-b) + (4b²-8ab)/(a-b)
(4a²+4b²-8ab)/(a-b)
4(a²-2ab+b²)/(a-b)
4(a-b)²/(a-b)
4(a-b)