Simplify
- $3 \sqrt { \frac { x ^ { 18 } } { y ^ { 7 } } } + \frac { 7 x ^ { 9 } } { y ^ { 3 } } \sqrt { \frac { 1 } { y } }$

question 64

Multiple Choice

Simplify.
- $3 \sqrt { \frac { x ^ { 18 } } { y ^ { 7 } } } + \frac { 7 x ^ { 9 } } { y ^ { 3 } } \sqrt { \frac { 1 } { y } }$

• A) \(\frac { - 4 x ^ { 9 } } { y ^ { 4 } }\)
• B) \(\frac { - 4 x ^ { 9 } \sqrt { y } } { y ^ { 4 } }\)
• C) \(\frac { - 4 x ^ { 9 } \sqrt { y } } { y ^ { 3 } }\)
• D) \(\frac { - 4 x ^ { 9 } } { y ^ { 3 } }\)

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