Question

Find the seventh term of the binomial expansion of (a-2b)^18

Answer 1

use Pascal's triangle.... but just writing it out is a pain.

Answer 2

hmm know of the binomial theorem?

Answer 3

you will find pascal's triangle here and how to do this
http://www.math10.com/en/algebra/probabilities/binomial-theorem/binomial-theorem.html

Answer 4

n= exponent (12)
r = therm that u need(7th)