Math Problem Statement

Select all of the expressions that are equivalent to 16^(5/2).

Solution

To solve this problem, we are determining which of the given expressions are equivalent to 165216^{\frac{5}{2}}. Let’s break this step by step:


Step 1: Simplify 165216^{\frac{5}{2}}

The expression 165216^{\frac{5}{2}} can be interpreted as: 1652=(1612)516^{\frac{5}{2}} = \left( 16^{\frac{1}{2}} \right)^5 Here, 161216^{\frac{1}{2}} represents the square root of 16: 1612=16=416^{\frac{1}{2}} = \sqrt{16} = 4 So: 1652=4516^{\frac{5}{2}} = 4^5

Thus, we need to determine which of the options are equivalent to 454^5.


Step 2: Evaluate Each Option

Option A: 454^5

  • This is directly equivalent to 454^5.
  • Correct.

Option B: 858^5

  • 848 \neq 4, and raising 8 to the 5th power does not match 165216^{\frac{5}{2}}.
  • Incorrect.

Option C: 165\sqrt{16^5}

  • The square root can be rewritten as: 165=(165)12=1652\sqrt{16^5} = \left( 16^5 \right)^{\frac{1}{2}} = 16^{\frac{5}{2}}
  • This matches the original expression.
  • Correct.

Option D: 1625\sqrt[5]{16^2}

  • The fifth root of 16216^2 is: 1625=(162)15=1625\sqrt[5]{16^2} = \left( 16^2 \right)^{\frac{1}{5}} = 16^{\frac{2}{5}}
  • This does not match 165216^{\frac{5}{2}}.
  • Incorrect.

Option E: (162)(1612)(16^2)(16^{\frac{1}{2}})

  • Using the exponent addition rule aman=am+na^m \cdot a^n = a^{m+n}: (162)(1612)=162+12=1652(16^2)(16^{\frac{1}{2}}) = 16^{2 + \frac{1}{2}} = 16^{\frac{5}{2}}
  • This matches the original expression.
  • Correct.

Option F: (165)(1612)(16^5)(16^{\frac{1}{2}})

  • Again, applying the exponent rule: (165)(1612)=165+12=16112(16^5)(16^{\frac{1}{2}}) = 16^{5 + \frac{1}{2}} = 16^{\frac{11}{2}}
  • This does not match 165216^{\frac{5}{2}}.
  • Incorrect.

Final Answer:

The correct options are:

  • A: 454^5
  • C: 165\sqrt{16^5}
  • E: (162)(1612)(16^2)(16^{\frac{1}{2}})

Do you need further clarifications or additional details?

Here are 5 related questions you might find helpful:

  1. How do you simplify expressions with fractional exponents?
  2. What are the rules for adding and multiplying exponents?
  3. How can roots and powers be expressed as exponents?
  4. What is the relationship between amna^{\frac{m}{n}} and radicals?
  5. How do you simplify expressions involving products of powers?

Tip: Remember, amna^{\frac{m}{n}} means the nn-th root of ama^m.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Exponents and Radicals
Laws of Exponents

Formulas

a^(m/n) = n√(a^m)
Product of powers rule: a^m * a^n = a^(m+n)

Theorems

Laws of Exponents

Suitable Grade Level

Grades 9-11