Question

Help Questions 5 only Please

Answer 1

To take the conjugate of two things that are being added or subtracted, follow this simple rule:
If you are adding them, subtract them instead.
If you are subtracting them, add them instead.
For example the conjugate of -5 + 7i is -5 - 7i
For example the conjugate of 4 - 2i is 4 + 2i

Answer 2

@BangkokGarrett Can you answer them please with an explanation so i understand them?

Answer 3

I'm sorry, but I don't think I can be any more clear. What part of my explanation confuses you specifically?

Answer 4

no i understand the bottom 2 i dont understand the top 3 for 4 its a for 5 its B am i correct?

Answer 5

ohhh...i thought you ONLY wanted help on number 5. my bad.

Answer 6

am I cprrect in 4 and 5?

Answer 7

Hint on #1: sqrt(-100) = sqrt((-1)x(100)) = sqrt(100) x sqrt(-1) = ??? one more step

Answer 8

yeah. youre ok on the last 2

Answer 9

is one -10?

Answer 10

no its 10 right?

Answer 11

no...look at my last step there....sqrt(100) x sqrt(-1)
sqrt(100) = 10, right?
sqrt(-1) = i, right?
So, sqrt(100) x sqrt(-1) = _______

Answer 12

10i?

Answer 13

yes. you always want to factor out a -1 if you can and then write sqrt(-1) as i.

Answer 14

okay for 2 i dont get it

Answer 15

@BangkokGarrett you there

Answer 16

I need help with 2 and 3 please help its on the image above