Register

What is the fifth term in the expansion of (3x - 3y)7? __ x3y4

What is the fifth term in the expansion of (3x - 3y)7? __ x3y4
asked 8.3k views
4 votes
What is the fifth term in the expansion of (3x - 3y)7?
__ x3y4

asked
User Warunapww
by
8.5k points

2 Answers

2 votes

Answer:

76545

Explanation:

got it write on edge :)

answered
User Haresh Vidja
by
8.8k points
5 votes
(r+1)th term of (a +x)^n = nCr a^(n-r)x^r

so 5th term of (3x - 3y)^7 = 7C4 * (3x)^(7-4) (-3y)^4 (NOTE r = 4)

= 35 * 27x^3 * 81y^4

= 76545 x^4y^3
answered
User Krl
by
8.2k points
← Prev Question Next Question →

Related questions

User Ctietze
asked Jun 16, 2018 73.0k views
What is the fifth term in the expansion of (3x - 3y)^7? ___ x3y4
Ctietze asked Jun 16, 2018
by Ctietze
8.8k points
2 answers
4 votes
73.0k views
Ask a Question
Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.

Categories

Other Questions

How do you can you solve this problem 37 + y = 87; y =
How do you estimate of 4 5/8 X 1/3
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Link Copied!