SOLUTION: How would. You simplify this problem? {{{(7-6i)+(9+11i)}}} I added 6i to both sides and got 17i then I brought the 9 and 7 down to get 7+9+17. Then added all three numbers

Question 534174: How would. You simplify this problem?

I added 6i to both sides and got 17i then I brought the 9 and 7 down to get 7+9+17. Then added all three numbers together and got 33. I'm not sure if this is correct
Found 2 solutions by Alan3354, KMST:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!

Multiply like any 2 binomials
----------
= 7*(9+11i) - 6i*(9+11i)
=
= 63 + 23i + 66
= 129 + 23i
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
I'm confused. Maybe something got mixed up in the text of the problem or the previous answer.
Were you supposed to add the two complex numbers or multiply them?
If adding

When working with complex numbers, you work as if the i was a variable x.
You cannot mix the real part of the number, with the imaginary part that has the i, just like you cannot add 16+5x.
The only difference is that the even powers of i are real numbers, so multiplications of complex numbers can always simplify to something as short as
, and all powers simplify to (if the exponent is a multiple of 4) or to (if not a multiple of 4).
RELATED QUESTIONS
(7-6i)+(9+11i) (answered by venugopalramana)
(7-6i)+(9+11i) (answered by richard1234)
Please can someone help me with this problem: For i= -1, 3i(2+5i)= x+6i,then x=? This is (answered by ankor@dixie-net.com,kmcruz09,ayman11)
The problem asks to simplify and express this expression in a+bi form: {{{ 7 sqrt( -75 (answered by mananth)
Dividing Complex numbers: The question: (5-6i)(4+7i)/(2+i)(5-6i) I tried multiplying... (answered by solver91311)
How do you simplify (-6 + 2i) + (-4 - 4i) and (9 + 6i) - (5 + i) (answered by Theo)
Simplify the following quotient of complex numbers into the form a + bi. -7+6i/9+6i i... (answered by Alan3354)
(7+6i)(9+i)multiply. i can't seem to grasp the concept here. Please... (answered by rfer)
Simplify the following quotient of complex numbers into the form a + bi. -7+6i/9+6i... (answered by geetha_rama)