SOLUTION: Here is the expression and answer, I have tried to solve this but I cannot come up with the same answer that was given to me from the teacher. I need to write this in standard for

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: Here is the expression and answer, I have tried to solve this but I cannot come up with the same answer that was given to me from the teacher. I need to write this in standard for      Log On


   

Question 351402: Here is the expression and answer, I have tried to solve this but I cannot come up with the same answer that was given to me from the teacher. I need to write this in standard form. The answer given was 12-13i
(5-7i) - (-7+6i)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
%285-7i%29-%28-7%2B6i%29 Start with the given expression.


5-7i%2B7-6i Distribute the negative.


%285%2B7%29%2B%28-7i-6i%29 Group like terms.


12-13i Combine like terms.


So %285-7i%29-%28-7%2B6i%29=12-13i


So the expression is now in standard form a%2Bbi where a=12 and b=-13


If you need more help, email me at jim_thompson5910@hotmail.com

Also, feel free to check out my tutoring website

Jim