Resposta :
x/1-x + 2/x-1 =0
x(x-1) + 2(1-x) = 0
x(x - 1) + 2(1-x) =0
x2 - x + 2 -2x = 0 ==> x2 -3x + 2 = 0 ==> x2 - Sx + P = 0 ==> S = 3 e P = 2
x = 3 ±√1 ==> x' = 1 e x" = 2
2
x(x-1) + 2(1-x) = 0
x(x - 1) + 2(1-x) =0
x2 - x + 2 -2x = 0 ==> x2 -3x + 2 = 0 ==> x2 - Sx + P = 0 ==> S = 3 e P = 2
x = 3 ±√1 ==> x' = 1 e x" = 2
2