Simplifying an expression when the cube root of an expression is on the denominator

Simplifying an expression when the cube root of an expression is on the denominator

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

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The video tutorial explains how to simplify cube roots by ensuring the index matches the powers. It covers rewriting numbers as exponents, eliminating denominators by matching powers, and multiplying inside radicals to achieve simplification. The final steps involve taking cube roots of the simplified expression.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in simplifying a cube root expression?

Multiply the number by 2

Divide the number by 3

Rewrite the number as an exponent

Rewrite the number as a fraction

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it important to match the index with the power when simplifying cube roots?

To decrease the value of the expression

To make the expression more complex

To ensure the expression is in its simplest form

To increase the value of the expression

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What should you multiply by to eliminate the cube root of a number?

The cube root of the number

The number itself

The square root of the number

The fourth root of the number

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you take the cube root of an expression like 3^3 * X^3?

Add 3 to each exponent

Divide the exponents by 3

Subtract 3 from each exponent

Multiply the exponents by 3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final simplified form of the expression 3^3 * X^3 under a cube root?

3X

X^3

9X^2

3X^3