Let’s take –2

Cube of –2 = (–2)
^{
3
}

= –2 × –2 × –2

= –2 × 2 × 2

= –8

So, cube of negative numbers is negative,

and cube of positive numbers is positive

Note:

This is different from squares.

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Square of a number is always positive

But Cube of a number can be negative