Questions: Select the best answer for the question.
16. Rationalize the denominator. -13/sqrt(x)
A. It's already rationalized.
B. 169/x
C. -13 sqrt(x)/x
D. x sqrt(x)/-13
Transcript text: Select the best answer for the question.
16. Rationalize the denominator. $\frac{-13}{\sqrt{x}}$
A. It's already rationalized.
B. $\frac{169}{x}$
C. $\frac{-13 \sqrt{x}}{x}$
D. $\frac{x \sqrt{x}}{-13}$
Solution
Solution Steps
To rationalize the denominator of the expression \(\frac{-13}{\sqrt{x}}\), we need to eliminate the square root from the denominator. This can be done by multiplying both the numerator and the denominator by \(\sqrt{x}\).
Step 1: Original Expression
We start with the expression given in the problem:
\[
\frac{-13}{\sqrt{x}}
\]
Step 2: Rationalizing the Denominator
To rationalize the denominator, we multiply both the numerator and the denominator by \(\sqrt{x}\):
\[
\frac{-13}{\sqrt{x}} \cdot \frac{\sqrt{x}}{\sqrt{x}} = \frac{-13 \sqrt{x}}{x}
\]
Step 3: Simplified Expression
The expression is now simplified to:
\[
\frac{-13 \sqrt{x}}{x}
\]
Final Answer
The rationalized form of the expression is \(\boxed{\frac{-13 \sqrt{x}}{x}}\).