Question

I want to make sure I have the answer correct .

Which of the following is the conjugate of a complex number with 2 as the real part and 7 as the imaginary part?

2 + 7i
-2 - 7i
-2 + 7i
2 - 7i

I want to say 2+7i but I'm not sure

Answer 1

i think you might be right

Answer 2

I mean I look at it and it doesn't have any negative signs in it so that's the only one that fits.

Answer 3

2+7i is the original number

it is NOT the conjugate (so it's NOT the answer)

Answer 4

original: a+bi

conjugate: a-bi

Answer 5

Oh so it would be 2-7i?

Answer 6

correct

Answer 7

Thank you!

Answer 8

np