Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
-$\sqrt { \frac { 121 } { 7 } }$
A) $11 \sqrt { 7 }$
B) $\frac { 11 \sqrt { 7 } } { 7 }$
C)60
D) $\frac { 121 \sqrt { 7 } } { 7 }$

Question

Quizplus · Accepted Answer

To rationalize the denominator, multiply the numerator and the denominator by $\sqrt{7}$. This gives $\frac{\sqrt{121} \cdot \sqrt{7}}{\sqrt{7} \cdot \sqrt{7}} = \frac{11\sqrt{7}}{7}$.

Rationalize the Denominator and Simplify 1217\sqrt { \frac { 121 } { 7 } }7121​​

Rationalize the Denominator and Simplify $\sqrt { \frac { 121 } { 7 } }$