# Math Help - Help with Find the Number of Terms

1. ## Help with Find the Number of Terms

Hi,

Many Thanks,

Find the number of terms in the expansion of

Find the term involving

2. Originally Posted by emilyhicks
Find the number of terms in the expansion of $(x+y+z+2w)^{12}$

Find the term involving $x^2y^2z^4w^4$
The number of terms is equal the the number of non-negative integer solutions to the equation $x+y+z+w=12$.
So find $\binom{12+4-1}{12}$.

For the second part calculate $2^4\frac{12!}{(2!)^2(4!)^2}$