How do you conjugate nosotros?

in english? i am you are he/she is we are

conjugate is to change a verb depending on the sentence

How about "-i" since "i" is just "0 + i" so the conjugate should be "0 - i" or "-i"

it really depends on what equation it is in.

If you have a complex function in the form "a+ib", the (complex) conjugate is "a-ib". "Conjugate" is usually a function that the original function must be multiplied by to achieve a real number.