Question

Expand the following. In other words, remove the parentheses (brackets):

a(3+b-a)
A 3a + ab-a?
B 3a + ab + a?
Cза - ab - а?
D 3a + b - a

Answer 1

I believe that it would be A.

But answer A should be
`3a + ab - a^(2)`

Explanation: