Question

complex numbers

simplify.

\left(\sqrt{-5}+2\sqrt{20}\right)\left(-\sqrt{-5}\right)

Answer 1

Answer:

-5+ 20i

Step-by-step explanation:

just distribute: $(\sqrt{-5})(2\sqrt{20}+\sqrt{-5})$---> $(2\sqrt{-100}) -5$ and because 100 is the perfect square of 10 you get -5+20i