Question

How do you simplify `(2-3i)-(1-2i)`?

Answer 1

1 - i

Explanation:

To add/subtract complex numbers : add the 'real terms' and

add the 'imaginary terms' :

for example : If ( a + bi) and (c + di ) are 2 complex numbers

then: a + bi + c + di = (a + c ) + (b + d ) i

and a + bi - c - di = (a - c ) + (b - d )i

so 2 - 3i - 1 + 2i = (2 - 1 ) + (-3 +2 )i = 1 - i