
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
March 14th, 2011, 08:45 PM  #1 
Senior Member Joined: Dec 2010 Posts: 233 Thanks: 0  number and sets
1.Given z1=2i and z2 =4+3i.Express in the form a +bi ,where and b are real numbers. My solution i just skip to the last two part 1+ 7/5i (is it correct?) 2.Solve the equation square root of (3x/(1?x))=2 My solution squaring the both sides 3x/1?x=4 3x=44?x 9x^2+16z6=0 Then i am stuck in here,please help. 
March 14th, 2011, 08:54 PM  #2 
Global Moderator Joined: Nov 2009 From: Northwest Arkansas Posts: 2,766 Thanks: 4  Re: number and sets ... x = 4 is out. 
March 14th, 2011, 09:03 PM  #3 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,209 Thanks: 517 Math Focus: Calculus/ODEs  Re: number and sets
1.) and I made the assumption that z_2z_1 was the denominator of the 2nd term, you can use parentheses to make it clear. 
March 15th, 2011, 07:41 AM  #4 
Senior Member Joined: Dec 2010 Posts: 233 Thanks: 0  Re: number and sets
According to the solution of question 1 that you did, how do you get 3/1+2i from the part 6/z2z1? 6/ 2+4i 3+3/2i (that's what I get ). Please tell me how you get 3/1+2i. 
March 15th, 2011, 07:44 AM  #5 
Global Moderator Joined: Nov 2009 From: Northwest Arkansas Posts: 2,766 Thanks: 4  Re: number and sets 

Tags 
number, sets 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Number of intersections between given sets  mid  Advanced Statistics  0  July 22nd, 2013 08:07 AM 
Number sets and creating a relationship  tbillion  Applied Math  17  September 5th, 2012 07:13 AM 
minor sets sets problem  Jamsisos  Advanced Statistics  1  June 21st, 2012 02:11 PM 
Number and sets  hoyy1kolko  Algebra  4  March 13th, 2011 12:00 AM 
Intersection of an infinite number of open sets (induction)  mAraujo  Real Analysis  2  July 26th, 2009 01:56 PM 