Question

please answer the question ​

Answer 1

Answer:

Given:

$\left( \dfrac{-\sqrt{20}}{\sqrt5} \right)$

Solution:

$\implies \left( \dfrac{-\sqrt{20}}{\sqrt5} \right)$

$\implies \left( \dfrac{-\sqrt{(5 \times 4)}}{\sqrt5} \right)$

$\implies \left( \dfrac{-2\sqrt5}{\sqrt5}\right)$

$\implies \left( \cancel{\dfrac{\sqrt5}{\sqrt5}} \times -2 \right)$

$\implies -2$

Thus it is a rational number

Answer 2

Answer:

(a) a rational number

Step-by-step explanation:

(-$\sqrt{20}$/$\sqrt{5}$) = (-2$\sqrt5$/$\sqrt{5}$) = -2,which is a rational number