find the root
- Thread starter tommie50
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That 3 is called the "index" of the radical.
It means a cube root.
\(\displaystyle \sqrt[3]{8} \ = \ 8^{1/3}\)
We can type it any way that makes sense.
cuberoot(8)
8^(1/3)
root[3](8)
Does it help you to simplify cuberoot(8), if you know that 8 is the same as 2^3?
\(\displaystyle \sqrt[3]{8} \ = \ \sqrt[3]{2^3}\)
Please let us know why you're stuck.
That 3 is called the "index" of the radical.
It means a cube root.
\(\displaystyle \sqrt[3]{8} \ = \ 8^{1/3}\)
We can type it any way that makes sense.
cuberoot(8)
8^(1/3)
root[3](8)
Does it help you to simplify cuberoot(8), if you know that 8 is the same as 2^3?
\(\displaystyle \sqrt[3]{8} \ = \ \sqrt[3]{2^3}\)
Please let us know why you're stuck.