How to solve this using imaginary numbers?

[rare surge]

Please help me how to start

[pearl canyon]

hmmmm

thinking

Lars.exe stopped working

[rare surge]

dude it is not so hard

[pearl canyon]

-50

[rare surge]

but how did u know

[pearl canyon]

You already asked

[rare surge]

how did u do it

[pearl canyon]

By remembering

[rare surge]

wut

[pearl canyon]

The solution

[rare surge]

oh i think i know

how

thanks

[pearl canyon]

np

💀

[opaque cairn]

$\\sqrt{-100}\sqrt{-25}=\=i\sqrt{100}\times i\sqrt{25}=\=10i\times5i=50i^2\i^2=\sqrt{-1}^2=-1\\implies 50i^2= -50$

[coarse sundial]

basyl

[opaque cairn]

incase you still wanted an explanation

[rare surge]

Thanks

[steady current]

.solved