Simplify each expression. (42)(48)
Table of contents
- 0. Review of Algebra4h 18m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations1h 43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 5m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 22m
- 10. Combinatorics & Probability1h 45m
0. Review of Algebra
Exponents
Problem 53
Textbook Question
Simplify each expression. Write answers without negative exponents. Assume all variables represent nonzero real numbers. r7/r10
Verified step by step guidance1
Identify the expression to simplify: \(\frac{r^{7}}{r^{10}}\).
Recall the quotient rule for exponents, which states that \(\frac{a^{m}}{a^{n}} = a^{m-n}\) when \(a \neq 0\).
Apply the quotient rule to the expression: \(\frac{r^{7}}{r^{10}} = r^{7-10}\).
Simplify the exponent by subtracting: \$7 - 10 = -3\(, so the expression becomes \)r^{-3}$.
Rewrite the expression without negative exponents by using the rule \(a^{-m} = \frac{1}{a^{m}}\), resulting in \(\frac{1}{r^{3}}\).
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Laws of Exponents
The laws of exponents govern how to simplify expressions involving powers. For division, subtract the exponent in the denominator from the exponent in the numerator when the bases are the same, e.g., r^7 / r^10 = r^(7-10) = r^(-3).
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Rational Exponents
Negative Exponents
A negative exponent indicates the reciprocal of the base raised to the positive exponent. For example, r^(-3) equals 1 / r^3. To write answers without negative exponents, rewrite expressions using positive exponents in the denominator.
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Zero and Negative Rules
Simplification of Algebraic Expressions
Simplifying expressions involves rewriting them in a simpler or more standard form. This includes applying exponent rules correctly and expressing the final answer without negative exponents, assuming variables are nonzero to avoid division by zero.
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Introduction to Algebraic Expressions
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