Question

find conjugate of -1 -2i​

Answer 1

Answer:

the conjugate of 1 is -i, the "other" square root of -1.

To find a complex conjugate, simply change the sign of the imaginary part (the part with the i ). This means that it either goes from positive to negative or from negative to positive. As a general rule, the complex conjugate of a+bi is a−bi . While 2i may not seem to be in the a+bi form, it can be written as 0+2i .this the conjugate of 2i