Question

Express the complex number:

(5i) × (-3/5 i)

In the form of a + ib. Where i = √-1

Answer 1

(5i)×(-3/5i)=5×(-3)/5 ×(i²)

=-3×-1. (I=√-1=> i²=-1)

=3=3+0i

a=3, b=0

Answer 2

Answer:

heya mate.....

here is your answer ..

5i×-3/5 i

=-3i^2

as we know ....i^2= -1

so ....-3i^2

.........=3

so ...3+0i