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Cube root of a negative number …

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Cube root of a negative number is

Posted by Bhavya Bansal 5 years, 2 months ago

CBSE > Class 08 > Mathematics

2 answers

Gaurav Seth 5 years, 2 months ago

When working with exponents, the only way to get negative results is to raise a negative number to an odd power. Since cubing a number means raising it to the 3rd power—which is odd—the cube roots of negative numbers must also be negative.

This applies to perfect cubes and estimating other cube roots. Let's look at a perfect cube example because it's easier to write out. We are going to find 3√−64.

−4=(−4)1 is negative−4×−4=(−4)2=16 is positive−4×−4×−4=(−4)3=−64 is negative

0Thank You

Aditya Raj 5 years, 2 months ago

Is also negative.

1Thank You

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CBSE > Class 08 > Mathematics