#### Answer

LCD=3$x^{2}$(x+5)(x-5)

#### Work Step by Step

$\frac{5}{x^{2}-25}$, $\frac{x+9}{3x^{3}-15x^{2}}$
$x^{2}$-25=$x^{2}$-$5^{2}$=(x+5)(x-5)
3$x^{3}$-15$x^{2}$=3$x^{2}$(x-5)
LCD=3$x^{2}$(x+5)(x-5)

Published by
Pearson

ISBN 10:
0321726391

ISBN 13:
978-0-32172-639-1

LCD=3$x^{2}$(x+5)(x-5)

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