Question

Which of the following is a rational number?

Answer 1

B)
`-√(64)`

Explanation:

A rational number, can be expressed as a fraction:
`(a)/(b)` where a and b are both integers.

The square root of 64, can be simplified to 8, since 8 * 8 = 64.

So the expression:
`-√(64) = -8`, and 8 is a rational number, since it can be expressed as:
`(8)/(1)`