Sunday
November 23, 2014

Homework Help: Pre Calculus 12 urgent

Posted by Shreya on Friday, January 18, 2013 at 10:00am.

andrew is working on a binomial problem (1/2x-y)^7. He asks u to :

i) what the coefficient of the 6th term
ii) find the term that has the variabes x^47^3 (ex. 34x^4y^3)
iii) find the first three terms of the expansion

I really need help with that ^ . I know the powers of A decrease with the terms, and the powers of b increase. So I think I get like 7P3 or something I just dont know where to go from there. The answer is supposed to be 21/4 for i) -35/10x^4y^3 and for iii) 1/128x^7-1/64x^6y+1/32x^5y^2.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Algebra2/trig - Hi, I can't figure out what I'm supposed to do on this problem. ...
pre-calculus - Find the designated term of the binomial expansion. 5th term of (...
Math binomial formula and sequence - a) use the binomial formula to find the 5th...
Math - Name School Team Event 3: Logic and Reasoning (with calculators) 5th/6th ...
Maths - The 5th term of an exponential sequence is 4 and of 2nd term is 35()...
maths - Given that the first term of an A.P is 7 and its 10th term is twice its ...
Arithmetic Progression - In an AP the 6th term is half the 4th term and the 3rd ...
Maths - In an A.P ratio of 3rd term and 5th term is 3:7. a)Find the ratio of the...
Core mathematics - The 4th term of an A.P.is 37 and the 6th term is 12 more than...
algebra - the first term of a sequence of numbers is 1. if each term after the ...

Search
Members