Question

Please help I'm running out of time

Answer 1

so remember that
`√(x) √(y) = √(xy)` so
`√(-18) = √(9) √(-1) √(2) =3i√(2)`
`√(-2) = √(-1) √(2) =i√(2)`
`i√(2)+3i√(2)=√(2)(i+3i)=√(2)(4i)=4i√(2)` answer is second one or
`4√(2)i`