Math Problem Statement

Evaluate: cube root of (-54) multiplied by cube root of (1/2)

Solution

The expression provided in the image is:

[ \sqrt[3]{-54} \cdot \sqrt[3]{\frac{1}{2}} ]

Let's break it down step by step:

  1. Cube root of -54: [ \sqrt[3]{-54} = -\sqrt[3]{54} ] The cube root of 54 is approximately 5433.78\sqrt[3]{54} \approx 3.78, so: 5433.78\sqrt[3]{-54} \approx -3.78

  2. Cube root of 12\frac{1}{2}: [ \sqrt[3]{\frac{1}{2}} = \frac{\sqrt[3]{1}}{\sqrt[3]{2}} = \frac{1}{\sqrt[3]{2}} \approx \frac{1}{1.26} \approx 0.7937 ]

  3. Multiplying both values: 3.78×0.79372.9993-3.78 \times 0.7937 \approx -2.999 \approx -3

Thus, the value of the expression is approximately:

3\boxed{-3}

Would you like more details or have any questions?

Here are 5 follow-up questions based on this problem:

  1. How do you compute the cube root of a negative number?
  2. What is the cube root of a fraction and how is it calculated?
  3. Can the cube root of a number ever result in an imaginary number?
  4. Why does multiplying a negative number by a positive number result in a negative number?
  5. How is the cube root different from the square root in terms of properties?

Tip: When dealing with cube roots, remember that cube roots of negative numbers are also negative, unlike square roots, which are imaginary when the number is negative.

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Math Problem Analysis

Mathematical Concepts

Cube Roots
Multiplication of Real Numbers
Negative Numbers

Formulas

cube root(a) = a^(1/3)
cube root(a/b) = (cube root(a))/(cube root(b))

Theorems

Properties of Cube Roots: Cube roots of negative numbers are negative
Multiplication Theorem: Negative multiplied by positive is negative

Suitable Grade Level

Grades 8-10