Question

Is root 4 rational? Explain!!!

Answer 1

no root 4 is rational no

it is irrational no

Answer 2

Yes, $\sqrt{4}$is a rational number because $\sqrt{4 } = \sqrt{2 \times 2} = + 2 \: or \: - 2$

Since both +2 and - 2 are rational numbers, so $\sqrt{4}$ is also a rational number.

I hope it helps you...