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  #1  
Old September 13th, 2009, 06:07 PM
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Cool Equations with fractions

Just a quick one if you're up for it!

(2x)/(x-1) - (x+1)/(x+2) = 0

My working out:

2x^ + 4x - x^ + 1 = 0
x^ + 4x + 1 = 0
x = ( -4 ± sqrt(4^ -4*1*1))/ 2*1
x = ( -4 ± sqrt(16 - 4))/ 2
x = (-4 ± sqrt(12))/2
ANS: x= -0.27 or -3.73 (2 d.p.) The book says -0.27 or 3.73

Thanks for the help! x
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  #2  
Old September 13th, 2009, 08:23 PM
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Hi square root

I guess your answer is right
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Old September 13th, 2009, 10:42 PM
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That's what I get as well. Guess the book must be wrong.
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Old September 22nd, 2009, 01:33 PM
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Thanks anyways, don't you just hate it when text books are wrong?
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