Algebra
posted by Andrew on .
Suppose x and y are real numbers and 4x+3xi+yi−43=2y+2xi−x+2yi+5i . What is the product xy .

(4x43) + (3x+y)i = (2yx) + (2x+2y+5)i
so, for the two complex numbers above to be equal,
4x43 = 2yx
3x+y = 2x+2y+5
(x,y) = (11,6)
xy=66