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x²-2x+0,75=-1,5x+4

I need the x and also the way how I calculated it.
 May 13, 2012
 #1
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[input]x^2-2x+0.75=-1.5x+4[/input]

x^2-2x+0.75=-1.5x+4
x^2-2x+0.75+1.5x-4=0
x^2-2x+0.75+1.5x-4=0
x^2-0.5x-3.25=0

a*x^2 + b*x + c = 0
p= b/a
q= c/a
here a = 1, then
p = -0.5
q = -3.25

x 1, 2 = -p/2 +- sqrt( (p/2)^2 - q )

x 1 = +0.5/2 + sqrt( (-0.5/2)^2 + 3.25 )
x 2 = +0.5/2 - sqrt( (-0.5/2)^2 + 3.25 )
[input]+0.5/2 + sqrt( (-0.5/2)^2 + 3.25 )[/input]
[input]+0.5/2 - sqrt( (-0.5/2)^2 + 3.25 )[/input]
 May 13, 2012
 #2
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Thank your for your help, I appreciate it.
 May 15, 2012

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