Question

How do you simplify `(9 – 6i) – (12 + 2i)`?

Answer 1

simplification is - 3 - 8i

Explanation:

To add or subtract complex numbers , add/subtract the real parts and add/subtract the coefficients of the imaginary parts.

for ( a + bi ) + (c + di ) = ( a + c ) + (b + d ) i

in this question (9 - 6i ) - (12 + 2i ) = (9 - 12 ) +( - 6 - 2 )i = - 3 - 8i