Question

Which expression is equivalent to (7+4i) +(8+i)

1. 15-5i
2. 15+5i
3. 5+0i
4. 20+0i

Answer 1

Answer:

The answer is number 2.

15+5i

Hope this helps

Answer 2

Answer:

2. 15 + 5i

Step-by-step explanation:

Remove the brackets.

7 + 4i + 8 + i

Rearrange.

7 + 8 + 4i + i

Add the like terms.

15 + 5i