# binomial expansion...

• Mar 9th 2010, 12:13 PM
katiethegreat
binomial expansion...
hiyaa,
theres this question which i'm stuck on cause it has a 2 in front of the x and i can't work it out

(1-2x)^4

thaaank you
• Mar 9th 2010, 12:15 PM
icemanfan
Find the binomial expansion of $(1 - a)^4$ and then everywhere you see an a, replace it with a 2x.
• Mar 9th 2010, 12:17 PM
katiethegreat
ohh sounds simple, thank you :D