Question

Which of the following is the conjugate of a complex number with –4 as the real part and 2 as the imaginary part?

A. 2i –4
B. 2i + 4
C. –4 –2i
D. –4 + 2i

Answer 1

@wio It's D, right?

Answer 2

C. –4 –2i
D. –4 + 2i

they are conjugates of each other

Answer 3

@dtan5457 So the answer is D?

Answer 4

it appears as if they both are answers..

Answer 5

@dtan5457 Well it's positive 2, not negative 2, which is why I'm leaning towards D...

Answer 6

"2 as the imaginary part"

if they assuming it's the positive then it would be C. –4 –2i

as you reverse the positive sign to a negative.

Answer 7

@perl Please help really quick?

Answer 8

I'm actually going to go for C.

the question makes it seem as -4+2i is the regular equation

i'd conjugate that to -4-2i.

Answer 9

@perl please help me

Answer 10

@perl ohhh ok! thanks so much! i really appreciate your help :)

Answer 11

Which of the following is the conjugate of a complex number with 4 as the real part and 2 as the imaginary part?
The given complex number is -4 + 2i

the conjugate of a + bi is a - bi

so that means the conjugate of -4 + 2i is -4 - 2i

Answer 12

that's exactly what i said. lol.

Answer 13

thanks @dtan5457 :)