Please help me with square roots!

- anonymous

Please help me with square roots!

- chestercat

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- anonymous

|dw:1348515128794:dw|

- anonymous

I do not know how to add square roots. Please explain.

- hartnn

a+a=2a
so what will be \(\sqrt2+\sqrt2=?\)

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## More answers

- anonymous

I don't know. Please explain in the simplest way possible! :(

- hartnn

if u have one apple and you add one more apple to it , how many apples do u have now ?

- anonymous

Two apples.

- hartnn

if u have one \(\sqrt2\) and you add one more \(\sqrt2\) to it , how many \(\sqrt2\) do u have now ?

- anonymous

Two?

- hartnn

yes! thats correct :)
so your answer will be
\( 2\sqrt2\)

- anonymous

I have another problem that is a little different. here it is.

- anonymous

|dw:1348515880601:dw|

- hartnn

if u have one âˆš5 and you add two more âˆš5 to it , how many âˆš5 do u have now ?

- anonymous

three?

- hartnn

yes, correct!
now u can solve :)
the answer would be then
\(3\sqrt5\)
understood ?

- anonymous

yes! thank you so much! can you see if I do the next one correctly?

- hartnn

sure go ahead.

- anonymous

|dw:1348516101245:dw|

- anonymous

That would be |dw:1348516160082:dw|

- hartnn

|dw:1348516206273:dw|

- anonymous

Yes.

- hartnn

square root and cube root cannot be added, so there is no simplification to this.

- hartnn

is first one also cube root ?

- anonymous

Oops my mistake! It is not the cube root. I am so sorry!

- 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

I will draw it a little better as I do not have a smartphone for easy photo taking.

- anonymous

|dw:1348516618045:dw|

- 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

do u get it ?

- anonymous

Yup! Thanks! Would you mind checking a few more? They are all different.

- anonymous

|dw:1348516889317:dw|

- hartnn

First of all
\(\large \color{red}{Welcome \quad to \quad OpenStudy.}\)

- anonymous

Aw thank you so much!

- hartnn

if you are subtracting 2 cube roots then u get a cube root only.

- hartnn

|dw:1348517060673:dw|

- anonymous

Oh I thought that I should have done it that way. Silly me!

- anonymous

|dw:1348517146691:dw|

- hartnn

thats correct!

- anonymous

Yay!

- anonymous

|dw:1348517231905:dw|

- hartnn

i can't see your answer.

- 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

what have u written after = sign ?

- anonymous

I have written ? because I don't know how to do it.

- hartnn

|dw:1348517501444:dw|

- anonymous

A question mark.

- hartnn

ok, what is 10*2 = ?

- anonymous

20

- hartnn

so \(\sqrt10\)\(\sqrt2\) will be \(\sqrt20\)
got it ?

- anonymous

yes thank you so much!

- hartnn

most welcome :)

- hartnn

\(\ddot\smile\)

- anonymous

|dw:1348517776323:dw|

- hartnn

that is so correct!
you are becoming good at this :)

- anonymous

Thanks!

- anonymous

|dw:1348518007723:dw|

- hartnn

yup. correct.

- anonymous

|dw:1348518085741:dw|

- hartnn

nopes, this one is not correct.

- anonymous

Oh. How would I do it?

- hartnn

hint :
3= \(\sqrt3\)\(\sqrt3\)

- anonymous

2?

- hartnn

|dw:1348518359277:dw|
get this ?

- anonymous

Yes! That is all of them. Thank you SO much! You are the best!

- hartnn

you are now good at solving such problems :)
Welcome :)
next time post each question separately.

- 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

yup. i will help :)

- anonymous

Awesomeness! You made my day.

- anonymous

|dw:1348518696935:dw|

- hartnn

hint :
27 = 3*3*3

- anonymous

so it would be 3x3x3?

- hartnn

2nd hint :
\(\sqrt[3]{x*x*x}=x\)

- hartnn

stuck ?

- anonymous

yeah

- anonymous

27

- hartnn

nopes.

- hartnn

|dw:1348519204306:dw|

- anonymous

I am confused. Sorry.

- hartnn

\(\huge \sqrt[3]{x.x.x}=x\)
put x=3 here.

- anonymous

3x3x3=27

- hartnn

the answer is 3.

- anonymous

oh. Sorry I was so confused... :(

- anonymous

|dw:1348519560685:dw|

- hartnn

hint :
64 = 4*4*4

- anonymous

got it!

- hartnn

answer = ?

- anonymous

|dw:1348519756019:dw|

- anonymous

oops i forgot to put the 3 in there.

- hartnn

|dw:1348519773319:dw|
yes. 4 is the answer.

- hartnn

i put it for you :)

- anonymous

thanks! I will let you know if I ever need anymore help! Thank you SOOOOO much!:D

- hartnn

Welcome SOOOOO much!:D

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