Question

Plz help me !!!!!!!!!

Answer 1

-i

Explanation:

20i/10 - 12i/4 =

2i - 3i =

-i

Answer 2

-i

Explanation:

20√(-1/100)-12√(-1/16)

20i√(1/100)-12i√(1/16)

20i•(1/10)-12i•(1/4)

2i-3i

-1i

-i