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October 5th, 2014, 08:19 AM  #1 
Newbie Joined: Oct 2014 From: England Posts: 6 Thanks: 0  Fundamental Laws and Precedence  John Bird
Hi Guys, I'm currently working through John Birds Engineering Mathematics Edition 5 and I cant seem to simplify question 9 Exercise 21. I've tried several times but don't seem to be having any luck, it would be greatly appreciated if somebody could give me a little guidance. I have attached a file containing the question. 
October 5th, 2014, 08:44 AM  #2 
Math Team Joined: Jul 2011 From: Texas Posts: 2,924 Thanks: 1521 
$\displaystyle \frac{(x+1)(x4)}{2x+2} = \frac{(x+1)(x4)}{2(x+1)} = \frac{x4}{2} \, ,\, \, x \ne 1$

October 5th, 2014, 08:52 AM  #3 
Newbie Joined: Oct 2014 From: England Posts: 6 Thanks: 0 
Oh god, it seems so simple now, I never thought to factorise the denominator. Thank you very much for your time.


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