AM-21

Partial fractions

A Math · Secondary 3 · Medium · Partial fractions

Express

\dfrac{12x-5}{x(x+3)}

in partial fractions of the form

\dfrac{A}{x}+\dfrac{B}{x+3}

. What is the value of

A

?

$-\dfrac{5}{3}$
$\dfrac{5}{3}$
$-\dfrac{5}{12}$
$\dfrac{5}{12}$

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