THIS IS USING COMPLEX NUMBERS IT IS SECTION 1.3 IN COLLEGE ALGEDRA, i HAVE DONE LIKE FOUR PROBLEM AND i CAN NOT FIRGURE OUT WHAT I AM DOING WRONG.
I WILL DO ONE OF THE PROBLEMS AND SHOW MY WORK.
51. (2+i)(3-2i)= SO I FOIL
6-4i+3i-2i sq.
6-3i
The answer is suppose to be 8-1 how can this be.