Question

(4 + 9i)+(4 + i)= 16+9i 8i 8 + 10i 10i

Explanation:

Step1: Add real - parts

$4 + 4=8$

Step2: Add imaginary - parts

$9i + i=(9 + 1)i=10i$

Step3: Combine results

The sum is $8 + 10i$

Answer:

$8 + 10i$