Question

4) Calcule:

c) (i+i)-(-6+9i)

d) (-10+8)-(-6+5)

Urgente!!!!!!!

Answer 1

c) (i+i)-(-6+9i)=

i+i +6 -9i=

2i-9i+6=

-7i+6.

d)(-10+8)-(-6+5)=

-2 +6 -5=

-2-5+6=

-7+6=

- 1