## Sinz 3 years ago Add the complex expressions, and simplify. (1 – 3.5i) + (3.6 + 6.5i)

1. Walleye

ok distribute it out first and lets see what you get

2. Sinz

(1+3.6) - (3.5i+6.5i)

3. Walleye

nope here is how you distribute \[(a+b) * (c + d) = ac + ad + bc + bd\]

4. Walleye

does that help at all?

5. Sinz

yes I am sorry I am helping others and keeping up with my own

6. Sinz

1-3.5i + 3.6 + 6.5i = 1+3.6 *1+6.5i= 3.7 + 6.6i = 3.5i+3.6 * 3.5i+6.5i= 7.1i + 10i = 17i does that look right

7. Sinz

or is it confusing?

8. Walleye

I will tell you the answer is 4.6 + 3i

9. Sinz

okay

10. Walleye

11. Sinz

thank you was it that confusing?

12. Tyler1992

All you do is add the real parts and then add the imaginary parts.. There shouldnt be any distributing

13. Walleye

You FOIL is very confusing haha.

14. Sinz

works lets double check

15. Walleye

Im really really sorry!!!!! I thought it was (1 – 3.5i) (3.6 + 6.5i) and not (1 – 3.5i) + (3.6 + 6.5i)

16. Walleye

tyler is right!

17. Tyler1992

\[(1 + 3.6) + (-3.5 + 6.5)i\]\[4.6 + 3i\]

18. Sinz

okay thank you tyler

19. Sinz

and you too Walleye