Answer:
8a8b7-20a4b6+4a3b3
Step-by-step explanation:
-4a2b3(-2a6b4+5a2b3-a)
We will have to open the bracket by multiplying all through
So
8a8b7-20a4b6+4a3b3
Since they all have different variables
So we will have to leave the answer as
8a8b7-20a4b6+4a3b3
