Para todo x real, x≠0, x≠1, x≠-1, os valores de A, B e C que tornam verdadeira a igualdade
4x+2 / x(x²-1)=A/x + Bx+C / x²-1 são, respectivamente:



a) -2; 2; 4.



b) 2; -2; 4.


c) 2; 2; 4.


d) -2; -2; 4.

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