Question

Find the difference of the complex numbers.

(2+81)-(-5-31)
O A. -3+111
O B. -3 + 51
O C. 7+ 51
O D. 7+111

Answer 1

D. 7 +11i

Explanation:

In many situations, you can treat "i" as though it were a variable. Collect terms in the usual way.

(2 +8i) -(-5-3i) = 2 +8i +5 +3i = (2+5) +(8+3)i

= 7 +11i