Question

B) (-4+5)+(9+81)
C) (-2+3i)+(-3+i)=
D)(-5+6i)-(5-31)+(-7+-4)=
E) (2-1)-(-2)-(6+91)-(-41)=-​

Answer 1

Explicação passo-a-passo:

B) (-4+5)+(9+81)=

= 1 + 90

= 91

C)(-2+3i)+(-3+i)=

= -2+3i-3+i

= -5+4i=0

4i=5

i=5/4

D)(-5+6i)-(5-31)+(-7+-4)=

= -5+6i-5+31-7-4

= -10 +6i +31-11

= -21+31+6i

= 6i= -10

i = -10/6

i= -5/3

E) (2-1)-(-2)-(6+91)-(-41)=

1+2-85+41=

44-85= -41