Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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niharika_kumar
2013-12-07 19:59:40

I don't know what to say to that but you accept it or not ,you are great in maths(and several others to in this forum) and it is great to interact with you all.

bob bundy
2013-12-07 19:40:14

hi niharika_kumar

My 'Help-me' posts do tend to suffer from gremlins  .  What follows may act as a warning to those who read them.

(i) Sometimes typos creep in.  I may not spot them until I look at my own post later and sometimes not even then.

http://www.mathisfunforum.com/viewtopic … 51#p293051

(ii) Sometimes I fail to read the question properly and go off 'on a tangent'.

(iii) Sometimes I'm just wrong.  I usually leave these errors as I don't like the idea of changing history to make myself look better.  In the example above, I think I just got confused by all those square root signs.    I'm trying to kid myself that I was about to spot it as I had evaluated all the possible answers in a spreadsheet and worked out which one worked (with the right number of roots).

(iv) Sometimes it takes me a while to fully get to grips with a problem.  I have some that I'm still trying to answer 2 years later.

Bob

niharika_kumar
2013-12-07 15:55:15

it was quite good, just needed more intelligent attention.

bob bundy
2013-12-07 00:43:24

Nehushtan:  Thanks for pointing out my missing square root sign.  I was just getting there as I had decimal values for the four possible answers and the question when you posted.

Bob

niharika_kumar
2013-12-07 00:35:04

thank you

bobbym
2013-12-07 00:20:52

Hi;

You can also use the formula that anonimnystefy showed me.

Nehushtan
2013-12-07 00:15:34

#### bob bundy wrote:

Who told you that?

This is what the correct step should be!

Nehushtan
2013-12-07 00:10:51

niharika_kumar
2013-12-07 00:10:30

this is what i did.
but the answer doesn't match with the options.

bob bundy
2013-12-07 00:08:55

OK.  So at least we agree.

Just trying something else .....

Bob

bob bundy
2013-12-07 00:01:03

hi

Just logged in.  I'm working on it now.

Bob

niharika_kumar
2013-12-06 23:41:57

simplify :

the options are
a)

b)

c)

d)

well,i tried to simplify but was struck by getting the answer:-

pls. help

niharika