Question

7) Expand: (3a +4b)³​

Answer 1

Answer:

3a+4b)

3

=(3a)

3

+3(3a)

2

(4b)+3(3a)(4b)

2

+(4b)

3

=27a

3

+108a

2

b+144ab

2

+64b

3...

hope it's easy dear =)