Question

1. Expand: (3a - 5b)​

Answer 1

Answer:

Identity = (A+B)

3

=A

3

+B

3

+3A

2

B+3AB

2

=(3a)

3

+(5b)

3

+(3a)

2

5b+3(5b)

2

3a

=27a

3

+125b

3

+135a

2

b+225ab

2