Respuesta :

alonna2000
It’s ba + 2b - 2a + ab

B times a is ba
B times b is 2b
-a times a is -2a
-a times -b is ab

Whenever it’s a negative and a positive, it will be a negative integer or letter.
But when there’s two negatives will be a positive integer or letter.
Rontech
B times a is ba b times b is 2b -a times a is 2b