Question

the value of √-9 . √-16

Answer 1

what's the problem?

Answer 2

\[\large \sqrt{-9}\sqrt{-16}\]


\[\large \sqrt{-1*9}\sqrt{-1*16}\]


\[\large \sqrt{-1}*\sqrt{9}\sqrt{-1}*\sqrt{16}\]


\[\large \sqrt{-1}*\sqrt{-1}*\sqrt{9}*\sqrt{16}\]


\[\large i*i*\sqrt{9}*\sqrt{16}\]


See what to do from here?

Answer 3

\[\sqrt{-1}=i\]

Answer 4

it says the answer is -12

Answer 5

that's right

Answer 6

how??

Answer 7

nvm i get it! ty!

Answer 8

oh ok, you sure?

Answer 9

yea thanks! :D

Answer 10

you're welcome