Question

Calcule as seguintes multiplicações:

A) (6+4i) (2+3i) =
B) (5+6i) (5+6i) =
C) (7+8i)²

Answer 1

Answer:

(6+4i) (2+3i) = 26 i

(5+6i) (5+6i) = -11 + 60 i

(7+8i)² = -15 + 112 i

Step-by-step explanation: