Question

-5i(-3+5i)
tell me how you got your answer

Answer 1

use commutative law
-5i(-3) + (-5i)(5i)
= 15i + 25

Answer 2

Thanks

Answer 3

15i+25

Answer 4

Distributive property. -5i * -3 = 15i
-5i*5i= -25i^2

-25i^2 + 15i

Answer 5

lovelesstime i^2 cancels out

Answer 6

i^2=-1

Answer 7

Two i's. it's i to the second power...

Answer 8

Dheera am I right?

Answer 9

yes i know
\[i^2=-1\]

Answer 10

It's 25i^ + 15i...

Answer 11

\[15i+25\] is the correct answer. i was just double checking. Thanks.

Answer 12

use i^2=-1

Answer 13

No..it's not that. It's 5i * 5i There is 2i's so 25i^2

Answer 14

YOU ARE RIGHT BUT \[I=\sqrt{-1} \]

SO I^2=-1

Answer 15

no its lower case i = sqrt(-1)

Answer 16

I didn't know that. -.-

I look at it and see 25i^2. I don't know that i ever equaled. I'm 14.

Answer 17

wts the confusion about?

Answer 18

\[\sqrt{-1}=i \sqrt{1}\]

Answer 19

It's 25i^2 + 15i

Answer 20

no. it's
\[25+15\]

Answer 21

25+15i

Answer 22

You forgot the i!

Answer 23

i fixed it.

Answer 24

Right now i is a variable! it is 25i^2 + 15i

Answer 25

in the question it does not give i!

Answer 26

i dont know what you're asking for me for Em, you are smashing this question to obvilion!

it doesn't have a chance agains you!

Answer 27

sorry Lovelesstime got to go. no time to explain. but since i=imaginary number.
http://en.wikipedia.org/wiki/Imaginary_number
little more explaining in wiki.

Answer 28

It is 25i^2 5i * 5i = 25i^2

they do not give i in the question therefore I am right. i is a variable in this question not -1 because in the question it does not SAY it is.

Answer 29

mostly i should taken as imaginary number.

Answer 30

are you doing complex numbers or not? if you are then i is the square root of -1

Answer 31

i could be anything!

Answer 32

I've never seen i used as a variable

Answer 33

I have.

Answer 34

i mean while doing complex numbers

Answer 35

i is the imaginary unit, UNLESS SPECIFIED...finished

Answer 36

This means I'm right, though.

Answer 37

ur right in ur own way emily, but its just that u didnt know what i was

Answer 38

The question did not say.

Answer 39

no question says it

Answer 40

sexy

Answer 41

It didn't say complexed o2 anythin.

Answer 42

or*

Answer 43

keep chugging away guys, ill help soon as i finish on anoterh quesiotn

Answer 44

arre yaar.....y dont u understand...,i is used only for complex numbers,,they dont use it anywhere else

Answer 45

http://cache.ohinternet.com/images/f/f3/Fanserviceftw_7538_Obvious_troll_is_obvious.jpg = Lovelesstime

Answer 46

rofl@akbar

Answer 47

Yes, they do. I see them in my math textbook all the time.

Answer 48

I am not clicking.

Answer 49

its safe for work, dont worry

Answer 50

thats juvenile

Answer 51

somebody calm her down..she isnt ready to accept the standard notation for iota

Answer 52

I am right gimme my medal Paul. -.-

Answer 53

meh I'm 17, I can be juvenile if I want

Answer 54

are you 17 loveless time?
im 25 :( so old, and so much math to learn!

Answer 55

I'm 14.

Answer 56

who gave medals for lovelesstime. did they give to calm her down