Math Problem Statement

Solve the equation

What is the irrational cube root ³√−24 rewritten as a product of an integer and another irrational cube root?

Solution

The question asks to rewrite the irrational cube root 243\sqrt[3]{-24} as a product of an integer and another irrational cube root.

Step-by-Step Solution:

  1. Expression Analysis: We are working with 243\sqrt[3]{-24}. Since 24-24 is negative, its cube root will also be negative. Let's factorize 24-24: 24=83-24 = -8 \cdot 3

  2. Cube Root Separation: Using the property of cube roots, ab3=a3b3\sqrt[3]{a \cdot b} = \sqrt[3]{a} \cdot \sqrt[3]{b}: [ \sqrt[3]{-24} = \sqrt[3]{-8} \cdot \sqrt[3]{3} ]

  3. Simplify the Cube Root of 8-8: The cube root of 8-8 is 2-2 because: (2)3=8(-2)^3 = -8

  4. Final Answer: Substituting back: [ \sqrt[3]{-24} = -2 \cdot \sqrt[3]{3} ]

Thus, the correct answer is: 233\boxed{-2 \sqrt[3]{3}}

Let me know if you have questions or need further clarification.


Related Questions:

  1. What is the cube root of a negative number generally?
  2. How do you simplify cube roots of larger numbers?
  3. What is the difference between square roots and cube roots?
  4. How would you simplify 543\sqrt[3]{54} into a similar form?
  5. Can all irrational cube roots be expressed as a product of an integer and a cube root?

Tip:

Remember that the cube root of a negative number will always result in a negative value, unlike square roots, which are undefined for negatives in the real numbers.

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Math Problem Analysis

Mathematical Concepts

Cube Roots
Irrational Numbers
Simplification of Radicals

Formulas

³√(a × b) = ³√a × ³√b

Theorems

Properties of Cube Roots

Suitable Grade Level

Grades 9-12