What is the cube root of 250?
回答 (6)
2010-02-14 4:09 pm
✔ 最佳答案
250^(1/3)= (5^3 * 2)^(1/3)
= 5^(3 * 1/3) * 2^(1/3)
= 5 * 2^(1/3)
2010-02-14 2:57 pm
cbrt(250) = cbrt(125 * 2)= cbrt(125)cbrt(2) = 5 cbrt(2)
and yes, punch calculator for decimal approximation
and yes, punch calculator for decimal approximation
2010-02-14 2:44 pm
Exact: 5 (2)^(1/3) [I don't know how to write the "cube root" symbol]
Approximate: 6.2996...
Approximate: 6.2996...
參考: TI-84 calculator for second answer.
2010-02-14 3:10 pm
cube root of 250 = 5 cube root 2 to be exact or approximately 6.2....
2010-02-14 3:02 pm
250 = 5^3 * 2
So:
CubeRoot(250) = CubeRoot(5^3 * 2) = CubeRoot(5^3) * CubeRoot(2) = 5*CubeRoot(2)
CubeRoot(2) = 1,26
5*1,26 = 6,3
CubeRoot(250) = 6,3
So:
CubeRoot(250) = CubeRoot(5^3 * 2) = CubeRoot(5^3) * CubeRoot(2) = 5*CubeRoot(2)
CubeRoot(2) = 1,26
5*1,26 = 6,3
CubeRoot(250) = 6,3
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