Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Geometry_Hater
Group Title
Find each coefficent described.
Coeffecient of y^3 in expression of (2y+1)^6
 one year ago
 one year ago
Geometry_Hater Group Title
Find each coefficent described. Coeffecient of y^3 in expression of (2y+1)^6
 one year ago
 one year ago

This Question is Closed

mathmate Group TitleBest ResponseYou've already chosen the best response.1
The general expansion of (a+b)^n is given by C(n,0)a^n + C(n,1)a^(n1)b + C(n,2)a^(n2)b^2 +... C(n,n)b^n where C(n,r) is the "n choose r" function, C(n,r)=n!/(r!(nr)!) In the given case, to get the coefficient of y^3, a=2y b=1, n=6, r=3 C(6,3)(2y)^3(1)^(63) =6!/(3!3!)2^3 y^3 1^3 =20*8y^3 =160y^3
 one year ago

Geometry_Hater Group TitleBest ResponseYou've already chosen the best response.0
Thanks though this is kinda confusing to me.
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.