how to find out square root of a number THE EASY WAY
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Uploaded by perimara on Sep 15, 2008
1.divide the number with 4
2.find the root of the new one
3.double it
Uploader Comments (perimara)
Top Comments
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Thank goodness for the mute button!
1 year ago 11
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It's a faulty assumption that this will work (well, work easier). You are adding steps which simplify the problem so long as the original number is divisible by four! So we know that 1024 = (4)(256) so sqrt(1024) = sqrt(4)*sqrt(256).
It is easier to say 1024 = 2*2*2*2*2*2*2*2*2*2 = 2^10 and sqrt(2^10) = (2^10)^(1/2) = 2^(10/2) = 2^5 = 32. This is an example of prime factorization and using the properties of powers.
Hope this helps some.
3 years ago 3
All Comments (35)
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maby next time you should do it on paper (Y)
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leave the maths to the greeks mate
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the idea of music was so stupid.
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What the name of this song
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Why the HELL THE MUSIC?!!!! I'M TRYING TO CONCENTRATE! wow...
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do i divide all numbers with 4? even if i had to find the square root of like 3912732 or just 32?
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do i divide all numbers with 4? even if i had to find the square root of like 3912732 or just 3?
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bull shit
,moron
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u spelt devide wrong lol
divide
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This works well with numbers that are divisable by four and squares of a natural number... oh well....
mpalin11 1 year ago
@mpalin11 ...well sort of..you see every number is divisable with four whether this number.....so if we devide for example 25 by 4 this means we have 6.25....so the square root of 6.25 is 2.5....now if you dont know that 2.5 is the square root of 6.25 and you divide it again by 4 then you end up with 1.5625 and if you want to find the square root of this number you are probably mad...so as you can see it can be done with any number but you chose what is more comfortable!
perimara 1 year ago
1:00 what if we didn't know it was 16?
Adell101 2 years ago
this is just a method to simplify the whole thing. if you don't know the square root of 256 you are going to divide again with 4 which leaves us with 64. and now the square root of that is 8. then you have to double it twice though: 8*2=16 16*2=32 ...
perimara 2 years ago