Question

Solve : $\sqrt{-5}\sqrt{-\frac{16}{5}}$

• A. $4$
• B. $-4$
• C. $3$
• D. $2$

Answer 1

The correct option is A $4$

Given,

$\sqrt{-5}\sqrt{-\frac{16}{5}}$

$=\sqrt{-5}\frac{\sqrt{16}}{\sqrt{-5}}$

$=\sqrt{16}=4$