Advertisements
Advertisements
प्रश्न
Cube roots of 8 are +2 and –2.
विकल्प
True
False
Advertisements
उत्तर
This statement is False.
Explanation:
(2)3 = 2 × 2 × 2 = 8
∴ `root(3)(8) = 2`
But (–2)3 = (–2) × (–2) × (–2) = –8 ≠ 8
∴ `root(3)(8) ≠ -2`
APPEARS IN
संबंधित प्रश्न
Find the smallest number by which the following number must be divided to obtain a perfect cube.
192
Write the cubes of 5 natural numbers which are of the form 3n + 1 (e.g. 4, 7, 10, ...) and verify the following:
'The cube of a natural number of the form 3n + 1 is a natural number of the same form i.e. when divided by 3 it leaves the remainder 1'.
What is the smallest number by which the following number must be multiplied, so that the products is perfect cube?
2560
By which smallest number must the following number be divided so that the quotient is a perfect cube?
8640
By which smallest number must the following number be divided so that the quotient is a perfect cube?
107811
Which of the following number is not perfect cubes?
64
Find the cube-root of -2197.
Find the cube-root of -2744000
Find the smallest number by which 10985 should be divided so that the quotient is a perfect cube
Evaluate:
`root(3)(27) + root(3)(0.008) + root(3)(0.064)`
