Cube Roots Math Example 3
Follow the full solution, then compare it with the other examples linked below.
Example 3
mediumSimplify .
Solution
- 1 Factor the radicand: and , so .
- 2 Apply the cube root to each factor: .
- 3 Simplify: and . Therefore .
Answer
When both the coefficient and the variable part are perfect cubes, the cube root simplifies completely. Use the rule for any real , and note that when is divisible by 3.
About Cube Roots
The cube root is the number that, when cubed, gives โ defined for all real numbers, including negatives.
Learn more about Cube Roots โ