
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
November 13th, 2013, 11:26 AM  #1 
Newbie Joined: Nov 2013 Posts: 1 Thanks: 0  Help!! A.s.a.p. I'm really confused!
I'm doing my maths homework and I don't understand this question! I don't know how to do the small 3 or 2, the ones that are powers like 3 to the power of 2 is 3x3=9. So when I write to the power of, you will know what I mean hopefully. For any even number n, prove that the product of it and the next two consecutive even numbers will be n to the power of 3 + 6n to the power or 2 + 8n That is the question in my maths textbook and I can't find anything anywhere to help me! If someone could please give me the answer and explain how they got it, that would be brilliant! Please+Thankyou!!! 
November 13th, 2013, 11:54 AM  #2 
Senior Member Joined: Jun 2013 From: London, England Posts: 1,316 Thanks: 116  Re: Help!! A.s.a.p. I'm really confused!
Do you mean: show that: 
November 13th, 2013, 01:38 PM  #3 
Global Moderator Joined: Dec 2006 Posts: 20,373 Thanks: 2010 
n(n + 2)(n + 4) = n(n(n + 4) + 2(n + 4)) = n(n² + 4n + 2n + 8) = n³ + 6n² + 8n (Pero omitted the final n.) The equation holds for any value of n; n needn't be an even number and needn't be an integer. The need for n to be an even integer is caused purely by the wording "next two consecutive even numbers" used in the description of the equation. 

Tags 
asap, confused 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
So confused with this  charlieboon  Calculus  5  February 23rd, 2013 10:01 AM 
confused. please help!  ccfoose  Algebra  3  April 16th, 2012 09:55 PM 
I am a little Confused.  Siedas  Algebra  9  March 10th, 2012 01:29 PM 
I am new and confused....  momoftwo  New Users  4  August 19th, 2009 06:15 PM 
So confused with this  charlieboon  Algebra  0  December 31st, 1969 04:00 PM 