Simplethings
Simplethings
27-03-2017
Mathematics
contestada
I need help with this please !!!
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rarrininger
rarrininger
27-03-2017
x²-2x+1/x²-4 ÷ x²-1/x²-4x+4=
(x-1)²/(x-2)x(x+2) * x²-4x+4/x²-1 =
(x-1)²/(x-2)(x+2) * (x-2)²/(x-1)(x+1)=
x-1/x+2 * x-2/x+1 =
(x-1)(x-2)/(x+2)(x+1)=
x²-2x-x+2/(x+2)(x+1)=
x²-3x+2/(x+2)(x+1)
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