Question

Indicated expression help please? (Picture below)

Answer 1

Firstly, I will need you to-write \(\large\color{black}{ -3\sqrt{-9} }\) in terms of \(\large\color{black}{ i }\).
(knowing that \(\large\color{black}{ \sqrt{-1} }\) is \(\large\color{black}{ i }\) )

Answer 2

@SolomonZelman -3 - 9i?

Answer 3

\(\large\color{black}{ 3(\frac{1}{3}-3\sqrt{-9}~~) }\)

\(\large\color{black}{ 3(\frac{1}{3}-3\sqrt{(-1) \times9}~~) }\)

\(\large\color{black}{ 3(\frac{1}{3}-3\sqrt{-1 }\times \sqrt{9}~~) }\)

\(\large\color{black}{ 3(\frac{1}{3}-3i\times 3) }\)

\(\large\color{black}{ 3(\frac{1}{3}-9i) }\)

Answer 4

now, expand the expression.

Answer 5

1 - 9i? @SolomonZelman

Answer 6

3 times 9i =?

Answer 7

(you got the "1" correctly, though)

Answer 8

Ohhh I see now, my answer is D., 1-27i?

Answer 9

@SolomonZelman