Question

PLEASE HELP ME! ILL MEDAL AND FAN

Which of the following is the conjugate of a complex number with 2 as the real part and 7 as the imaginary part?
A. 2 + 7i
B. -2 - 7i
C. -2 + 7i
D. 2 - 7i

Answer 1

the conjugate of a +bi is a - bi

Answer 2

so that of 2 + 7i will be ?

Answer 3

\[z=a+ib\]
Conjugate is \[\overline{z}=a-ib\]
Then what is the answer?

Answer 4

- only the sign changes

Answer 5

2-7i?

Answer 6

@welshfella

Answer 7

right