Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 6 - Radical Functions and Rational Exponents - 6-4 Rational Exponents - Practice and Problem-Solving Exercises - Page 387: 76

Answer

$10$

Work Step by Step

We want to break down this problem a little to be able to work with it. The number $1000$ can be broken down into a small base raised to a power: $10^3$ whereas the number $100$ can be broken down to $10^2$. Let us rewrite these number: $\dfrac{(10^3)^{4/3}}{(10^2)^{3/2}}$ Raising a power to a power means we can multiply the two powers or exponents to gether: $\dfrac{10^{(3)(4/3)}}{10^{(2)(3/2)}}$ Multiply to simplify: $\dfrac{10^{12/3}}{10^{6/2}}$ Reduce the fraction in the exponents by dividing both numerator and denominator by the greatest common factors: $\dfrac{10^{4}}{10^{3}}$ When we divide exponents with the same base, we keep the base and just subtract the exponent in the denominator from the exponent in the numerator $\left(\frac{a^m}{a^n}=a^{m-n}\right)$" $10^{4 - 3}$ Subtract the exponents, keeping the base: $10^{1}$ Any number raised to the first power is that same number. The exponent is no longer needed: $10$
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