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|dw:1370239174862:dw|

Hi I got the answer of 7/2√5 but when I do it I get something different.

oh i meant to write \[3(10)\over4\]sorry

I'm a bit lost I have to simplify this so would'nt 1 1/2√20 be 2 3/2√5

but the answer comes out to \[\frac{ 7 }{ 2 }\sqrt{5}\]

and where are you getting this from?

Our teacher placed the answer as \[\frac{ 7 }{ 2 }\sqrt{5}\]

I didn't get this answer either this is why it's confusing

No it's printed on my paper

then im really not sure

I appreciate your help Thank you yummydum

no problem :)

I got as my final answer \[\frac{ 3 }{ 4 }\sqrt{5} \] this is why it was confusing

I had a person help me don't I don't believe it's correct here is why unless I'm wrong

Alright so i read the whole problem. Where are you stuck? We should get 15/2.

teacher has an answer of \[\frac{ 7 }{ 2 }\sqrt{5}\] could the teacher be wrong

Yes. Teacher added the sqrt5 by misatke. Or maybe the question you wrote is incorrect.

|dw:1370243682678:dw|

Why is this so complicated? I'm lost

Which step is it that you don't understand?

my answer was \[\frac{ 3 }{ 4 }\sqrt{5}\] maybe this is wrong

|dw:1370244388921:dw|

Wouldn't we keep the root? and just multiply getting \[\frac{ 15 }{ 2 }\sqrt{5}\]

How will you simplify sqrt 20?

that's right it would be 4*5 which 4 goes down to 2 so it would be \[2\sqrt{5}\]

You made a mistake again. :P
It's not 2 3/2

so it's \[\frac{ 2 }{ 1 }X\frac{ 3 }{ 2 }\]

No.
I think you should redo the problem. Show me yor steps please.

ok

Awesome.
No the 2's on right cancels out. Right?

why would it cancel √20 would be 2√5 this is where I'm getting confused

is 2 canceling with the other 2

sqrt(20) = sqrt(2*2*5) = 2 sqrt5
Agree?

yes

Now the 2 from 2sqrt5 and the w in the denominator on the right canel out

I'm with you on that

Right o what are we left with now?

3√5

Right. And that is multiplied with..?

\[\frac{ 1 }{ 2 }\sqrt{5}\]

Right now multiply it out.

\[\frac{ 1 }{ 2 }\sqrt{5}\times \frac{ 3 }{ 1 }\sqrt{5}\]
Is this looking correct?

yes

\[\frac{ 3 }{ 2 }\sqrt{5}\]

do I take of the √ and make it \[\frac{ 3 }{ 2 }\times \frac{ 5 }{ 1 }=\frac{ 15 }{ 2 }\]

Like a boss. (y)

Thanks for everything wow :.)

Good job helping @newatthis !!!
@saifoo.khan

@yummydum is useless.

No she isn't :p

I'M useless.

Yummydum isn't. Or you,for that matter.

Thanks for everything it helps a lot when someone knows how to guide and explain it. :)

@help123please. believe me. I know her.
@newatthis You're welcome. :)

Well,yes...you've been here longer than me.

Lol. But no doubt she has a brown brain like me! D:

O_O

Yours is a great brain,Saif.

U ARE 2 HELPFUL. Lol.

And it's brown too!

Nope it's not.

I'm brown. Brain is brown too. Dummy is brown too. Hence she has a brown brain too.

We're prolly weirding @newatthis out.
Or at least,I am.

:P

'Hence,she has a brown brain too'.
Hence. I like that word.

Lol.

no I'm just doing math working my brain, or whatever is left. :)

Saif,I just noticed your smartscore is mine,with the numbers flipped upside down. XD

Haha. Nice catch.

IKR.

*Flips PC upside down*
OMGEE I HAVE A 99 SS!

Lol.

98% of the time,when typing lol,you're not actually laughing. Did u know? :P

Make that 99%. I love laughing. It helps in exercising my face muscles. :P

Lawl.

;)

sorry I just threw this in here

@newatthis please close this post and create a new thread.

2x * 3x = 6x^2 not just 6x
and √49 = 7
so now you have 6x^2 * 7 ....which is?

\[42x ^{2}\]

yes