Question

i) (1+2i)(-2+i)
plz give answer in my question​

Answer 1

Step-by-step explanation:

=(1+2i)(-2+i)

=(-2+i-4i+2i²)

=(2i²-3i-2)

=(2(-1)-3i-2). (here, i² = -1 )

= -(4+3i)...:);):):)

hope it might help you

Answer 2

Step-by-step explanation:

(1+2i)(-2+i)

=1(-2+i)+2i(-2+i)

=-2+i-4i-2

=-4-3i