AM-1324

Partial fractions

A Math · Secondary 4 · Hard · Partial fractions

Express

\dfrac{2x+7}{x^2-9}

in partial fractions of the form

\frac{A}{x-3} + \frac{B}{x+3}.

What is the value of

B

?

$-\dfrac{1}{6}$
$\dfrac{1}{6}$
$-\dfrac{1}{3}$
$\dfrac{1}{3}$

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