Question

Efetue:

a) (4 + 5i) + (1 – 2i)

b) (-2 + 3i) – (5 + 9i)

c) (4 + i) – (-5 – 7i)

d) (6 – i) + (4 + 2i) – (5 – 3i)

e) (√2 + i) – (√3 + i)

Answer 1

a) 4 + 5i + 1 - 2i = 5 + 3i
b) -2 + 3i - 5 - 9i = -7 - 6i
c) 4 + i + 5 + 7i = 9 + 8i
d) 6 - i + 4 + 2i - 5 + 3i = 5 + 4i
e) raiz de 2 + i menos raiz de 3 mais i = raiz de 2 menos raiz de 3.