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Basically, we found that 6431 is the number whose cube is 64.
Similarly, 221 is the number whose square is 2, but this is exactly the definition of a square root!
You have probably seen a square root with radical (√) notation before but there are other kinds of roots! We typically write them in radical form as:
The radical notation for a square root is a shorthand since the square root is the most common root, but we can write square roots with the more general notation too:
Returning to our original example, now we can say:
We call this the cube root of 64, or the number whose cube is 64.
Basically, we found that 6431 is the number whose cube is 64.
Similarly, 221 is the number whose square is 2, but this is exactly the definition of a square root!
You have probably seen a square root with radical (√) notation before but there are other kinds of roots! We typically write them in radical form as:
The radical notation for a square root is a shorthand since the square root is the most common root, but we can write square roots with the more general notation too:
Returning to our original example, now we can say:
We call this the cube root of 64, or the number whose cube is 64.