Question

alguem me ajuede pfv (-11i+7)-(-5-8i)

Answer 1

(-11i+7)-(-5-8i)

-11i+7 + 5+8i

7+5 - 11i+8i

12 - 3i

Answer 2

Resposta:

a) (7+4i)+(3-9i)

7+4i+3-9=10-5

b)(2-5i)-(1+9i)

2-5i-1-9i=1-14i

c) 6i+(15+8i)+(-3+11i)

6i+15+8i-3+11i=12+25i

d) (1/2-12i)+3(1/4+7i)-3i

1/2-12i+3-1/4-7i)-3i

2/4-12i+12/4-1/4-4-7i-3i =13/4-22i