/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 40 Perform the indicated operations... [FREE SOLUTION] | 91Ó°ÊÓ

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Perform the indicated operations. Final answers should be reduced to lowest terms. $$\frac{x^{2}}{10} \div\left(\frac{2}{x} \div \frac{x}{5}\right)$$

Short Answer

Expert verified
\[ \frac{x^{4}}{100} \]

Step by step solution

01

- Simplify the innermost division

First, simplify the innermost division which is \(\frac{2}{x} \div\frac{x}{5}\). To do this, multiply the first fraction by the reciprocal of the second fraction: \frac{2}{x} \div\frac{x}{5} = \frac{2}{x} \times\frac{5}{x} = \frac{2 \times\rm{5}}{x \times\rm{x}} = \frac{10}{x^2}\.
02

- Replace and simplify the outer division

Now replace the simplified expression back into the original problem: \(\frac{x^{2}}{10} \div \frac{10}{x^{2}}\). Again, multiply the first fraction by the reciprocal of the second fraction: \(\frac{x^{2}}{10} \times \frac{x^{2}}{10} = \frac{x^{2} \times \rm{x^{2}}}{10 \times \rm{10}} = \frac{x^{4}}{100}\).
03

- Simplify the final expression

Reduce \(\frac{x^{4}}{100}\) to its lowest terms. There are no common factors between the numerator and the denominator, so the fraction is already in its lowest terms.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Division of Fractions
When you see a division operation with fractions, the first step is to think about multiplying by the reciprocal instead of dividing directly. Let's take the example of \(\frac{2}{x} \div \frac{x}{5}\). Here, instead of dividing \(\frac{2}{x}\) by \(\frac{x}{5}\), we multiply \(\frac{2}{x}\) by the reciprocal of \(\frac{x}{5}\). The reciprocal of \(\frac{x}{5}\) is \(\frac{5}{x}\). So, the division becomes: \[\frac{2}{x} \times \frac{5}{x} \].

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