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# how to express in the form a+b√c watch

1. My question is:
Express √500 + √50 divided by √5 in the form a+b√c
2. (Original post by gudetama)
My question is:
Express √500 + √50 divided by √5 in the form a+b√c
Can you say what you have tried?

Did you know that ?
3. (Original post by Mr M)
Can you say what you have tried?

Did you know that ?
I don't know where to start:/
4. (Original post by gudetama)
I don't know where to start:/
Assuming the question is why don't you separate this into ? Can you get any further now?
5. (Original post by Mr M)
Assuming the question is why don't you separate this into ? Can you get any further now?
so 500/50 in a root + 50/5 in a root?
6. (Original post by gudetama)
so 500/50 in a root + 50/5 in a root?
The first bit worries me? Have you just made a mistake? Can you simplify those numbers at all?
7. I don't know whats wrong, I really don't understand
8. (Original post by gudetama)
I don't know whats wrong, I really don't understand
A 5 has turned into a 50 for no good reason in your answer.
9. oh okay i didn't realise, yes, that was a mistake
10. (Original post by waiser)
thank you!!!
11. Try to simply what's inside the root. I.e. Root20=Root4 x Root5.

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12. (Original post by gudetama)
thank you!!!
Glad to help buddy, do i deserve a thumbs up and maybe a follow?
13. (Original post by Waiser)
GJ on the full answers bro.

The aim here is to show the original poster how they can answer the question. There is actually quite a lot of skill and experience involved in doing this well. For example, if they are stuck using a particular method, the ideal is to show them how to get that method to work, not to show them a solution using a completely different technique.

In general, the best approach is to give small 'nudges' in the right direction. Do not post full solutions.

Try to remember that people posting here have widely differing experience levels and educational backgrounds. Just because someone has posted what you consider an extremely simple question, it doesn't give you any right to try to make them feel inferior about it.

By the same token, please try to use common sense when deciding if you can answer a question. If a thread is labelled Postgraduate, or has 15 detailed posts from people at university level with no resolution, it is somewhat unlikely someone studying AS maths will be able to help. That doesn't mean you can't try, but do take the time to read the other posts and check you really understand what's going on before posting anything.

i would encourage you to read this first.
14. (Original post by Waiser)
Thanks for helping but the rule of F38 (the Maths Forum) is that we do not post full solutions unless it is absolutely necessary to do so. Try just to nudge users in the right direction (sometimes this can take a while but they will get there in the end).
15. (Original post by Mr M)
Thanks for helping but the rule of F38 (the Maths Forum) is that we do not post full solutions unless it is absolutely necessary to do so. Try just to nudge users in the right direction (sometimes this can take a while but they will get there in the end).
I am sorry, i completely forgot. I will keep that in minds. I just posted that when i read that he didn't understand anything.
16. (Original post by Waiser)
Glad to help buddy, do i deserve a thumbs up and maybe a follow?
did both
17. (Original post by gudetama)
did both
thanks pal

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