Tuesday
September 30, 2014

Homework Help: Pre-Calc-please check

Posted by Bethany on Wednesday, January 4, 2012 at 12:54pm.

Please check this for me
expand (3z-2b)^5 using Binomial Theorem
(a+b)^n = n on top sigma in middle k=0 to right (n/k)a^(n-k)b^k

(3a-2b)^5 = 5 on top sigma in middle k=0 on bottom(5/k)(3a)^5-k(-2b)^k

(5/0)(3a)^5(-2b)^0+(5/1)(3a)^4(-2b)^1 +(5/2)(3a)^3(-2b)^2

+(5/3)(3a)^2(-2b)^3 + (5/4)(3a)^1(-2b)^4+(5/5)(2a)^0(-2b)^5

=243a^5-810a^4b+1080a^3b^2+-720a^2b^3+240ab^4-32b^5

5!/(5-5)!5!=5!/1-5!=5!/5!1

(5/0)=5!/(5-0)!0!=5!/5!0!=1

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Pre-CalcPlease check - Please check: 1.Write in expanded form: this is a sigma ...
Pre-Calc-Please check answer - 1.Write 4+6+8+10 in sigma notation: I came up ...
Pre-Calc-Please check answer - 1.Write 4+6+8+10 in sigma notation: I came up ...
Pre-Calc-Please check - 1.Write 4+6+8+10 in sigma notation: I came up with sigma...
Algebra II - Please help-I need to write 4+6+8+10 in sigma notation would it be ...
Maths - Express the sum using summation notation: 1 - 1/2 + 1/3 - 1/4 + 1/5...
Maths - Express the sum using summation notation: 1 - 1/2 + 1/3 - 1/4 + 1/5...
Maths - Express the sum using summation notation: 1 - 1/2 + 1/3 - 1/4 + 1/5...
Algebra - find the indicated sum not sure how to type the sigma sign, but here ...
algebra - find the indicated sum 4 on top of sigma symbol i=1 on the bottom of ...

Search
Members