Ximpledu

Binomial Theorem

See how to use the binomial theorem to solve (x + y)n.
1 example and its solution.

Binomial Theorem

Theorem

(x + y)n = nC0xny0
+ nC1xn - 1y1
+ nC2xn - 2y2
+ ...
+ nCkxn - kyk
+ ...
+ nCnx0yn
yk term coefficient:
n trials, the number of ways to pick y k times

Combination (Math)

Example

(x + 4y)3
Solution