Math Problem Statement

Evaluate the expression: ∛(6√3 + 10) - ∛(6√3 - 10)

Solution

The expression you've provided is:

[ \sqrt[3]{6 \cdot \sqrt{3} + 10} - \sqrt[3]{6 \cdot \sqrt{3} - 10} ]

Step-by-Step Solution

  1. Expression Analysis:

    • The first term is the cube root of 63+106 \cdot \sqrt{3} + 10.
    • The second term is the cube root of 63106 \cdot \sqrt{3} - 10.
  2. Simplifying the Expression: This looks like a form where we might want to check if the two cube roots can be combined into some simpler form. To explore this further, let’s denote the two cube roots as follows: [ a = \sqrt[3]{6 \cdot \sqrt{3} + 10}, \quad b = \sqrt[3]{6 \cdot \sqrt{3} - 10} ] The expression becomes aba - b.

  3. Attempt to Combine Terms: We suspect that a simplification might involve using a binomial identity or recognizing a form like (ab)(a2+ab+b2)(a - b)(a^2 + ab + b^2) for some values of aa and bb. However, given that the cube roots involve terms that do not cancel out easily, this expression does not simplify trivially. Further numerical or algebraic exploration could give insight, but it doesn't reduce directly.

Approximate Numerical Solution

Since the exact form is complex, let's compute the numerical value for this expression:

[ a = \sqrt[3]{6 \cdot \sqrt{3} + 10} \quad \text{and} \quad b = \sqrt[3]{6 \cdot \sqrt{3} - 10} ]

I will calculate these values next.The numerical result of the expression 63+10363103\sqrt[3]{6 \cdot \sqrt{3} + 10} - \sqrt[3]{6 \cdot \sqrt{3} - 10} is approximately 22.

This suggests that the expression simplifies to 22, although arriving at this conclusion through algebraic methods would involve more advanced techniques in recognizing potential identities.

Would you like more details on the simplification process or any other questions?

Related Questions:

  1. How can you recognize when expressions with radicals can simplify further?
  2. What algebraic identity might apply to cube roots of binomial expressions?
  3. How would you solve similar cube root expressions numerically?
  4. What is the importance of approximations in solving complex radical expressions?
  5. Can this approach be extended to other radical expressions with different powers?

Tip:

In problems involving cube roots, always check if they can be expressed as sums or differences of cubes, which could lead to simpler solutions.

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Math Problem Analysis

Mathematical Concepts

Radicals
Cube Roots
Simplification

Formulas

a - b = ∛(x) - ∛(y) for cube roots
Numeric approximation of cube roots

Theorems

Properties of cube roots
Binomial theorem (for further exploration)

Suitable Grade Level

Grades 11-12