Simplify two problems please 6 / 5i and √-30?

Question

6 / 5i

√-30

Answer 1

i = -1

so it is 6/-5 = -1.2

and

the square root of 30i

Answer 2

-6i/5

i*sqrt(30)

Answer 3

6/(5i) = -(6/5)i

√(-30) = i√(30)

Answer 4

6 / 5i

mult by i/i

6i / -5

-(6/5)i

√-30

i√30

.