Posted by Sara on .
Check Answers Please?
1. 5+(2+3i) + (37i)
= 4 + 4i
2. (510i)  (2+i)
= 7  9i
3. 5i(23i)
= 10i  15
4. (2+3i)(37i)
= (1)(4i)

Algebra2 
Sara,
I Made a Mistake Problem #4 Answer Is
2120i 
Algebra2 
Steve,
Nope. I'd be interested in how you got your answers.
1. 5+(2+3i) + (37i) = (5+23) + (37)i = 6  4i
2. (510i)  (2+i) = (52) + (101)i = 3  11i
3. correct, but in standard form is 15  10i
4. (2+3i)(37i) = 6  14i  9i  21i^2 = 6  23i + 21 = 15  23i 
Algebra2 
Sara,
I went back and I corrected problem 2 and 3.
In problem 2 I found my mistake, But in problems 1 and 4 I'm stuck and can't figure out how you got those answers.
I did the problems at least 4 times already and I keep getting the same answers:/ 
Algebra2 
Sara,
I think i know what i did wrong in problem 4!
My multiplication is wrong! 
Algebra2  My Bad! 
Steve,
Ouch! I blew it in #1. You are correct. Dunno how I got 6.

Algebra2 
Sara,
Lol:D
You were being speeding threw the problems just like me!
i did that in problem 4!
I got the right answer now!
Thank you! 
Algebra2 
Sara,
Sorry "being" shouldn't have been there.
Another mistake!