Question

Is √2×√8 a rational or irrational.justify

Answer 1

Answer:

Rational

Step-by-step explanation:

√2*√8

=√2*√2*2*2

=√2*2√2

=2*√2*√2

=2*2

=4

As 4 can be represented in the form of p/q where q is not equal to zero. Hence, √2*√8 is a rational number.

Answer 2

Answer:

Rational number

Step-by-step explanation:

$\sqrt{2 } \times \sqrt{8} = \sqrt{2} \times \sqrt{2 \times 2 \times 2} \\ = \sqrt{2} \times 2 \sqrt{2} \\ = 2(2) \\ = 4$