Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
-$\frac { 9 \sqrt { 7 } } { \sqrt { 5 } }$
A) $\frac { 9 \sqrt { 35 } } { 5 }$
B) $\frac { \sqrt { 2835 } } { 5 }$
C) $\frac { \sqrt { 35 } } { 45 }$
D) $\frac { 45 \sqrt { 5 } } { 7 }$

Question

Quizplus · Accepted Answer

To rationalize the denominator of $\frac { 9 \sqrt { 7 } } { \sqrt { 5 } }$, multiply both the numerator and the denominator by $\sqrt{5}$ to get $\frac { 9 \sqrt { 7 } \cdot \sqrt { 5 } } { \sqrt { 5 } \cdot \sqrt { 5 } } = \frac { 9 \sqrt { 35 } } { 5 }$.

Rationalize the Denominator and Simplify 975\frac { 9 \sqrt { 7 } } { \sqrt { 5 } }5​97​​

Rationalize the Denominator and Simplify $\frac { 9 \sqrt { 7 } } { \sqrt { 5 } }$