Here we will show you how to calculate the cube root of 8 minus the cube root of 20. In other words, we will calculate ∛8 - ∛20.
To calculate the cube root of 8 minus the cube root of 20, we will first take the cube root of each number and then find the difference. Here is the math and the answer:
∛8 = 2
∛20 ≈ 2.7144
2 - 2.7144 = -0.7144
∛8 - ∛20 ≈ -0.7144
For your convenience, we have also included the answer to the cube root of 8 minus the cube root of 20 in its simplest radical form:
2 - ∛20
Subtracting Cube Roots
Use the tool below to subtract another set of cube roots.
Cube root of 8 minus cube root of 21
Go here for another cube root subtraction problem that you may find interesting.