The complex conjugate of 13-21i is 1.3+ 2i.
In general the conjugate of a+bi is a - bi
and the conjugate of a-bi is a + bi
Just divided the numerator(the top number) by the denominator(bottom number)
I’m sorry what subject is this I will still help u
15+24= put it in the calculator u will find the answer(hope this helped)
