Răspunsuri

2014-11-17T23:22:01+02:00
-x/x-3+3/3-x+2x/x-3=-x/x-3+2x/x-3+3/3-x=x/x-3+3/3-x=x(3-x)+3(x-3)/(x-3)(3-x)=3x-x²+3x-9/6x-x²-9=6x-x²-9/6x-x²-9=1
2014-11-18T08:20:12+02:00
13x/x-3/3-x+2x/x-3=
=-x/x-3+2x/x-3+3/3-x=
=x/x-3=3/3-x=
=x(3-x)+3(x-3)/(x-3)(3-x)=
=3x-x^2+3x-9/6x-x^2-9=1
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