Rasjonale likninger

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x                      8           3
----- +  ----------------------  =--------
x+2       x[sup]2[/sup]+2x          x


x                      8               3
----- +  ----------------------  =--------
x+2               x(x+2)               x


   x*x   +  8           3
------------------  =--------
  x* (x+2)              x

 x*x   +  8            
------------------  =3
  (x+2)            

x[sup]2[/sup]+8=3*(x+2)

x[sup]2[/sup]+8=3x+6

x[sup]2[/sup]+8-3x-6=0

x[sup]2[/sup]-3x+2=0

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

x=2         x=1

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