AM-1187

Partial fractions

A Math · Secondary 4 · Medium · Partial fractions

Express

\dfrac{3x^2+1}{(x+1)(x^2+1)}

in the form

\dfrac{A}{x+1}+\dfrac{Bx+C}{x^2+1}

, where

A,B

and

C

are constants.

$A=2,\ B=1,\ C=-1$
$A=1,\ B=2,\ C=-1$
$A=2,\ B=-1,\ C=1$
$A=3,\ B=0,\ C=1$

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