Question

is √-16 a rational number or not​

Answer 1

yes it is a rational number

Answer 2

No, √-16 is not a rational number.

• When expressing a number that is rational, it should be written in the p/q form where the denominator of the fraction cannot be zero.
• Here, the square root of a negative number is taken.
• When taking the squaring of a term, its value is positive or 0.
• So, taking its root cannot be negative.
• Thus, √-16 is irrational.