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valentina_108 [34]
2 years ago
14

Simplify 5 x times the fraction 1 over x to the power of negative 7 times x to the power of negative 2. 5x 5x−6 5 5x6

Mathematics
1 answer:
nasty-shy [4]2 years ago
4 0

Answer:

  • 5x^6

Explanation:

The expression that you want to simplify is:

  • 5x\times \frac{1}{x^{-7}}\times x^{-2

This is the simplification step-by-step:

1. Mulitply the expressions on the numerator among them and the expressions on the denominator among them:

5x\times \frac{1}{x^{-7}}\times x^{-2}=\frac{5x\cdot x^{-2}}{x^{-7}}

2. For equal bases that are multiplying, add the exponents:

\frac{5x\cdot x^{-2}}{x^{-7}}=\frac{5x^{1-2}}{x^{-7}}=\frac{5x^{-1}}{x^{-7}}

3. Pass the power on the denominator to the numerator by changing its sign (negative exponents become positive when inverted)

\frac{5x^{-1}}{x^{-7}}=5x^{-1}x^{7}

4. Simplify adding the exponents with the same base:

5x^{-1}x^{7}=5x^{-1+7}=5x^6

And that is the final expression in its most simple form.

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