Question

Can someone please check my work?? Wanna make sure I'm doing this right! Simply each number by using the imaginary number i.

thanks!

Answer 1

\[\sqrt{-7}\] = 7i or \[i \sqrt{7}\]

Answer 2

\[\sqrt{-81}\] = 3i

Answer 3

\[\sqrt{-16}\] = \[2i \sqrt{4}\]

Answer 4

\[3\sqrt{-9}\] = \[3i\]

Answer 5

The last one is wrong.

Answer 6

@dido525 Oh wow!! Thank you. I can't believe I'm doing these somewhat right lol. Would it be \[3i \sqrt{3}\] ??

And there was also a problem that was \[\sqrt{-72}\] I got: \[2i \sqrt{3}\]

Answer 7

The last one should be 9i.

Answer 8

Well think about it WITHOUT the negative.