I'm not sure if i am allowed to post 10 questions at 1 time, but i did. If im not supposed to im sorry. :) Anyway, i need help with these. Thanks so much!

How many terms are in the expansion (a + b)^15.

Expand (2x - 3y)^3

Expand (2x - 5y)^5

Expand (n - 4)^6

Expand (x - 3)^5

How many terms are in the expansion (x + y)^10

What is the sixth term of (a - b)^7?

What is the sixth term of (x + y)^8

The first terms of (x + y)5 is y5 (True or False)

What is the fourth term of (2x + 3y)^6

Question

I'm not sure if i am allowed to post 10 questions at 1 time, but i did. If im not supposed to im sorry. :) Anyway, i need help with these. Thanks so much!

How many terms are in the expansion (a + b)^15.

Expand (2x - 3y)^3

Expand (2x - 5y)^5

Expand (n - 4)^6

Expand (x - 3)^5

How many terms are in the expansion (x + y)^10

What is the sixth term of (a - b)^7?

What is the sixth term of (x + y)^8

The first terms of (x + y)5 is y5 (True or False)

What is the fourth term of (2x + 3y)^6

kinggeorge · Answer

While there's no rule saying so, it would be better to post each question separately.

anonymous · Answer

ok, thanks for the tip

anonymous · Answer

I think the binomial theorem. (a+b)^n = SUM (n choose k)a^(n-k) b^k where k = 0 to n should help for all those.