Explain how the meaning of rational exponents follows from extending the properties of integer exponents to rational numbers, allowing for a notation for radicals in terms of rational exponents. For example, we define 5(1/3) to be the cube root of 5 because we want [5(1/3)] 3 = 5[(1/3) x 3] to hold, so [5(1/3)] 3 must equal 5.
The Real Number System
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Explain why the sum or product of rational numbers is rational; why the sum of a rational number and an irrational number is irrational; and why the product of a nonzero rational number and an irrational number is irrational.
Explain how the meaning of rational exponents follows from extending the properties of integer exponents to rational numbers, allowing for a notation for radicals in terms of rational exponents. For example, we define 5(1/3) to be the cube root of 5 because we want [5(1/3)] 3 = 5[(1/3) x 3] to hold, so [5(1/3)] 3 must equal 5.
Rewrite expressions involving radicals and rational exponents using the properties of exponents.
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