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#1 2012-09-19 21:57:47
- Agnishom
- Super Member
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What must be added?
What must be added to the following expression to make it a perfect square?
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#3 2012-09-20 01:44:13
- Agnishom
- Super Member
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Re: What must be added?
Please expain why you get
Last edited by Agnishom (2012-09-20 01:45:47)
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#4 2012-09-20 02:14:07
- Agnishom
- Super Member
Online
Re: What must be added?
Yeah!
I coudn't pay enough concentration.
Sometimes it happens
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#6 2012-09-20 15:01:09
- Agnishom
- Super Member
Online
Re: What must be added?
Thanks!
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#7 2012-09-20 17:01:39
- bobbym
- Administrator
Online
Re: What must be added?
Hi Agnishom;
There is another way which does not require any of the heavy machinery.
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#8 2012-09-21 22:57:49
- Agnishom
- Super Member
Online
Re: What must be added?
Really? Whazzit?
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#9 2012-09-21 23:04:21
- bobbym
- Administrator
Online
Re: What must be added?
Hi;
The method depends on inspection and some knowledge of common squares. I am only offering it as a sometime faster alternative. In most cases you should use and learn the method used in post #2.
Let b be what you have to add.
You are looking for a b in
that makes a square. So start with
You have 2 equations which say what b must be added to b + 56 and b + 200 that give you two squares. Well the next square after 56 is 64 so b = 8 is a possibility but 200 + 8 is not a square.
Then next square is 81 which means in b + 56 = 81 b would be 25. Plugging in b into the second equation 25 + 200 = 225 which is a square too. You are done, b = 25.
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
#10 2012-09-22 14:16:19
- Agnishom
- Super Member
Online
Re: What must be added?
I think #2 was better 
It doesn't look very tedious except that I was a little bit confused then
'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
#11 2012-09-22 17:20:21
- bobbym
- Administrator
Online
Re: What must be added?
Okay, I just thought you might want to see something else.
In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.