(5i+4) + (4i-3)
5i+4i-3+4
9i - 1
(2+i) - (3+4i)
(2+i) + (-3 - 4i)
-1 -3i
Each part, real numbers and imaginary, are to be taken as separate pieces; add them with and subtract them by each other as you normally would. :)
I got imaginary means complex numbers
So answer is d
PEMDAS order refers to parentheses, exponents, multiplication, division, addition, and subtraction. So, 2*5=10 and 34+10=44.