Math Problem Statement

What is the value of the eighth root of 16?

Solution

The image displays the expression 168\sqrt[8]{16}, which represents the eighth root of 16.

To solve this, we rewrite the expression using fractional exponents: 161816^{\frac{1}{8}}

Now, let's express 16 as a power of 2: 16=2416 = 2^4 Thus, we can rewrite 161816^{\frac{1}{8}} as: (24)18(2^4)^{\frac{1}{8}}

Applying the rule (am)n=amn(a^m)^n = a^{m \cdot n}: 2418=248=2122^{4 \cdot \frac{1}{8}} = 2^{\frac{4}{8}} = 2^{\frac{1}{2}}

So, 212=22^{\frac{1}{2}} = \sqrt{2}.

Therefore, the answer is: 168=2\sqrt[8]{16} = \sqrt{2}

Would you like further details or have any questions?


Here are 5 related questions to deepen understanding:

  1. How do we simplify expressions with higher-order roots, like 3216\sqrt[16]{32}?
  2. What are fractional exponents, and how do they relate to roots?
  3. Can you explain how to convert roots into fractional exponent form for different bases?
  4. How would you solve 2568\sqrt[8]{256} using similar methods?
  5. How does the power rule (am)n=amn(a^m)^n = a^{m \cdot n} apply in other situations?

Tip: Simplifying expressions often involves rewriting numbers as powers of smaller bases, which makes calculations more straightforward.

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Math Problem Analysis

Mathematical Concepts

Roots
Exponents
Simplification

Formulas

a^(m/n) = nth root of a^m
(a^m)^n = a^(m*n)

Theorems

Exponent rules
Root simplification

Suitable Grade Level

Grades 8-10