Question

Please I'll give you a medal :)
what is 6 radical 4?

Answer 1

12

Answer 2

or -12

Answer 3

12

Answer 4

radical 4 is either 2 or negative two. multiply that by the coefficient (6) and you get 12 or -12

Answer 5

lol i messed up

Answer 6

^^and by "either" I mean "both". Radicals are weird like that.

Answer 7

radical 4 is always positive 2

Answer 8

so oly 12 works here

Answer 9

... I don't think so @ganeshie8

Answer 10

(-2)^2=4, so therefore the square root of 4 is also -2

Answer 11

Solve for x.
3/x = x/32

96

48
4 radical 6
6 radical 4

Answer 12

thats not correct @gandalfwiz google a bit u wil find out

Answer 13

Yes, you could google it, but it wouldn't give you the complete answer.

Answer 14

thanks what would this answer be
Solve for x. 3/x = x/32
96
48
4 radical 6
6 radical 4

Answer 15

@ganeshie8 Maybe you're thinking of how if you have a negative number under a square root you get an imaginary number? But this is just that the answer is negative, not the term under the square root.

Answer 16

@emilysheeran17 The answer I got for that was 4 root 6

Answer 17

I am saying when you take a square root of +ve number, it never gives u a negative number. It gives oly +ve number.

Answer 18

@gandalfwiz I love you!

Answer 19

http://www.wolframalpha.com/input/?i=sqrt%284%29

Answer 20

@ganeshie8 , that 's prety different than what I've learned in math class. You do agree that (-2)^2 equals 4, right?

Answer 21

THanks @emilysheeran17 :)

Answer 22

yes, so ?

Answer 23

@ganeshie8 look at that site and scroll down.

Answer 24

you're not getting wat im saying at all

Answer 25

\(x^2 = 4\) => \(x = \pm \sqrt{4}\)

Answer 26

but, \(\sqrt{4} = 2\) oly. a square root cann never take a negative value.

Answer 27

I'm not understanding what you're saying. root 4 -2 only? What do you mean by that?

Answer 28

its a equal sign, do u read it as - sign ha ?

Answer 29

Yeah, I saw it as a minus sign. But I don't see it as proof that the square root of 4 is only two.

Answer 30

I didnt intend it to be a proof lol

Answer 31

I am trying to convey you wat I see. thats all

Answer 32

Hey guy one more?
Six is the geometric mean of 18 and what number?

Answer 33

I think -6

Answer 34

6 radical 4 has oly one solution : 12. it cannot have two solutions.

Answer 35

no thats not a choice :( the options are 2 3 4 or 9

Answer 36

let x be the other number :-

\(6 = \sqrt{18x}\)

\(6^2 = 18x\)

\(36 = 18x\)

solve x

Answer 37

@gandalfwiz please help me and @ganeshie8 just give up dude

Answer 38

@emilysheeran17 sorry, I'm not sure then. Maybe I'm finding the algebraic mean lol.

Answer 39

fine

Answer 40

@gandalfwiz What is the geometric mean of 3 and 2?

Answer 41

Well, the way I learned to do means was adding up the numbers and dividing by the quantity of numbers, but if that didn't work for your previous problem I don't know if it will work for this one either.

Answer 42

My way would give you a mean of 2.5. Is that an answer choice?

Answer 43

no sorry I wrote the wrong thing its What is the geometric mean of 3 and 21

Answer 44

I got 12

Answer 45

Ohhhhh wait I just looked it up.

Answer 46

You multiply the numbers together and then take the square root if there are 2 terms, the cube root if there are 3 terms, etc.

Answer 47

That would mean that the geometric sum of 3 and 21 is squareroot 63, which can be simplified to 3root7