Here we will show you how to calculate the cube root of 8 minus the cube root of 81. In other words, we will calculate ∛8 - ∛81.
To calculate the cube root of 8 minus the cube root of 81, we will first take the cube root of each number and then find the difference. Here is the math and the answer:
∛8 = 2
∛81 ≈ 4.3267
2 - 4.3267 = -2.3267
∛8 - ∛81 ≈ -2.3267
For your convenience, we have also included the answer to the cube root of 8 minus the cube root of 81 in its simplest radical form:
2 - 3∛3
Subtracting Cube Roots
Use the tool below to subtract another set of cube roots.
Cube root of 8 minus cube root of 82
Go here for another cube root subtraction problem that you may find interesting.