Find the Least Common Denominator $\frac { 5 } { x ^ { 2 } - 81 } + \frac { 4 } { x ( x - 9 ) }$

question 66

Multiple Choice

Find the least common denominator.
- $\frac { 5 } { x ^ { 2 } - 81 } + \frac { 4 } { x ( x - 9 ) }$

• A)x(x + 9)
• B)x(x - 9)
• C) \(\left( x ^ { 2 } + 9 \right) \left( x ^ { 2 } - 9 \right)\)
• D)x(x + 9)(x - 9)

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