Find the cube root of 81: 81−−√3.(1 point)
Responses
27
27
81−−√3
root index 3 start root 81 end root
9
9
−9
The cube root of 81 is 4.
To find the cube root of 81, you can use the formula 81^(1/3). Simplifying this, we get:
81^(1/3) = (3^4)^(1/3)
= 3^(4/3)
Since 4/3 is not a whole number, we cannot simplify it further. Therefore, the cube root of 81 is 3^(4/3).
To find the cube root of 81, you can proceed as follows:
1. Start by taking the number 81.
2. Use the symbol √3 to represent the cube root operation.
3. Express the cube root of 81 as 81^(1/3).
4. Calculate 81 raised to the power of 1/3: 81^(1/3) = 4.3267487109222245.
5. The cube root of 81 is approximately 4.3267 (rounded to four decimal places).
So, the cube root of 81 is 4.3267 (approximately).