anonymous
  • anonymous
Please help me with square roots!
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
|dw:1348515128794:dw|
anonymous
  • anonymous
I do not know how to add square roots. Please explain.
hartnn
  • hartnn
a+a=2a so what will be \(\sqrt2+\sqrt2=?\)

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anonymous
  • anonymous
I don't know. Please explain in the simplest way possible! :(
hartnn
  • hartnn
if u have one apple and you add one more apple to it , how many apples do u have now ?
anonymous
  • anonymous
Two apples.
hartnn
  • hartnn
if u have one \(\sqrt2\) and you add one more \(\sqrt2\) to it , how many \(\sqrt2\) do u have now ?
anonymous
  • anonymous
Two?
hartnn
  • hartnn
yes! thats correct :) so your answer will be \( 2\sqrt2\)
anonymous
  • anonymous
I have another problem that is a little different. here it is.
anonymous
  • anonymous
|dw:1348515880601:dw|
hartnn
  • hartnn
if u have one √5 and you add two more √5 to it , how many √5 do u have now ?
anonymous
  • anonymous
three?
hartnn
  • hartnn
yes, correct! now u can solve :) the answer would be then \(3\sqrt5\) understood ?
anonymous
  • anonymous
yes! thank you so much! can you see if I do the next one correctly?
hartnn
  • hartnn
sure go ahead.
anonymous
  • anonymous
|dw:1348516101245:dw|
anonymous
  • anonymous
That would be |dw:1348516160082:dw|
hartnn
  • hartnn
|dw:1348516206273:dw|
anonymous
  • anonymous
Yes.
hartnn
  • hartnn
square root and cube root cannot be added, so there is no simplification to this.
hartnn
  • hartnn
is first one also cube root ?
anonymous
  • anonymous
Oops my mistake! It is not the cube root. I am so sorry!
hartnn
  • hartnn
can u take a snap shot of your question and post it? because i think that both of them are cube roots. hence your answer of 6\(\sqrt[3]10\) is correct, u just missed the 3 of cube root.|dw:1348516519903:dw|
anonymous
  • anonymous
I will draw it a little better as I do not have a smartphone for easy photo taking.
anonymous
  • anonymous
|dw:1348516618045:dw|
hartnn
  • hartnn
yup both are cube root. then u added correctly to get 6\(\sqrt[3]10\), u just missed the 3|dw:1348516685189:dw|
hartnn
  • hartnn
do u get it ?
anonymous
  • anonymous
Yup! Thanks! Would you mind checking a few more? They are all different.
anonymous
  • anonymous
|dw:1348516889317:dw|
hartnn
  • hartnn
First of all \(\large \color{red}{Welcome \quad to \quad OpenStudy.}\)
anonymous
  • anonymous
Aw thank you so much!
hartnn
  • hartnn
if you are subtracting 2 cube roots then u get a cube root only.
hartnn
  • hartnn
|dw:1348517060673:dw|
anonymous
  • anonymous
Oh I thought that I should have done it that way. Silly me!
anonymous
  • anonymous
|dw:1348517146691:dw|
hartnn
  • hartnn
thats correct!
anonymous
  • anonymous
Yay!
anonymous
  • anonymous
|dw:1348517231905:dw|
hartnn
  • hartnn
i can't see your answer.
anonymous
  • anonymous
There is no answer. I put ? Because I don't know how to do it. I wish they would allow people to make the picture bigger. Ugh! :(
hartnn
  • hartnn
what have u written after = sign ?
anonymous
  • anonymous
I have written ? because I don't know how to do it.
hartnn
  • hartnn
|dw:1348517501444:dw|
anonymous
  • anonymous
A question mark.
hartnn
  • hartnn
ok, what is 10*2 = ?
anonymous
  • anonymous
20
hartnn
  • hartnn
so \(\sqrt10\)\(\sqrt2\) will be \(\sqrt20\) got it ?
anonymous
  • anonymous
yes thank you so much!
hartnn
  • hartnn
most welcome :)
hartnn
  • hartnn
\(\ddot\smile\)
anonymous
  • anonymous
|dw:1348517776323:dw|
hartnn
  • hartnn
that is so correct! you are becoming good at this :)
anonymous
  • anonymous
Thanks!
anonymous
  • anonymous
|dw:1348518007723:dw|
hartnn
  • hartnn
yup. correct.
anonymous
  • anonymous
|dw:1348518085741:dw|
hartnn
  • hartnn
nopes, this one is not correct.
anonymous
  • anonymous
Oh. How would I do it?
hartnn
  • hartnn
hint : 3= \(\sqrt3\)\(\sqrt3\)
anonymous
  • anonymous
2?
hartnn
  • hartnn
|dw:1348518359277:dw| get this ?
anonymous
  • anonymous
Yes! That is all of them. Thank you SO much! You are the best!
hartnn
  • hartnn
you are now good at solving such problems :) Welcome :) next time post each question separately.
anonymous
  • anonymous
Thank you so much again! Will do! Since you are so good at square roots, would you help me with like three more? They are different from the others.
hartnn
  • hartnn
yup. i will help :)
anonymous
  • anonymous
Awesomeness! You made my day.
anonymous
  • anonymous
|dw:1348518696935:dw|
hartnn
  • hartnn
hint : 27 = 3*3*3
anonymous
  • anonymous
so it would be 3x3x3?
hartnn
  • hartnn
2nd hint : \(\sqrt[3]{x*x*x}=x\)
hartnn
  • hartnn
stuck ?
anonymous
  • anonymous
yeah
anonymous
  • anonymous
27
hartnn
  • hartnn
nopes.
hartnn
  • hartnn
|dw:1348519204306:dw|
anonymous
  • anonymous
I am confused. Sorry.
hartnn
  • hartnn
\(\huge \sqrt[3]{x.x.x}=x\) put x=3 here.
anonymous
  • anonymous
3x3x3=27
hartnn
  • hartnn
the answer is 3.
anonymous
  • anonymous
oh. Sorry I was so confused... :(
anonymous
  • anonymous
|dw:1348519560685:dw|
hartnn
  • hartnn
hint : 64 = 4*4*4
anonymous
  • anonymous
got it!
hartnn
  • hartnn
answer = ?
anonymous
  • anonymous
|dw:1348519756019:dw|
anonymous
  • anonymous
oops i forgot to put the 3 in there.
hartnn
  • hartnn
|dw:1348519773319:dw| yes. 4 is the answer.
hartnn
  • hartnn
i put it for you :)
anonymous
  • anonymous
thanks! I will let you know if I ever need anymore help! Thank you SOOOOO much!:D
hartnn
  • hartnn
Welcome SOOOOO much!:D

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