Mindblast3r
  • Mindblast3r
how does finding square roots work???
Mathematics
schrodinger
  • schrodinger
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Mindblast3r
  • Mindblast3r
like improper square roots.
Mindblast3r
  • Mindblast3r
\[\sqrt{7}+\sqrt{40}\]
Nnesha
  • Nnesha
you need to factor 40

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Mindblast3r
  • Mindblast3r
|dw:1433116028145:dw|
Mindblast3r
  • Mindblast3r
done
Mindblast3r
  • Mindblast3r
|dw:1433116056302:dw|
Nnesha
  • Nnesha
yeah but remember 40 is under square root so one of factor must be perfect square root
Mindblast3r
  • Mindblast3r
done and done.
Nnesha
  • Nnesha
yep that's right
Nnesha
  • Nnesha
\[\sqrt{7}+2\sqrt{10}\] that's it both root are not same so you can't do anything else
Mindblast3r
  • Mindblast3r
hm i had the wrong question then.
Mindblast3r
  • Mindblast3r
how do i find a imperfect square root? like is the only way to do it manually?
Mindblast3r
  • Mindblast3r
Mindblast3r
  • Mindblast3r
like 2.6 * 2.6 = 6.76
Mindblast3r
  • Mindblast3r
2.61 * 2.61 = 6.8121
Mindblast3r
  • Mindblast3r
is that the only way to find out?
Nnesha
  • Nnesha
first step is to factor that number (one of number should be perfect square root )
Mindblast3r
  • Mindblast3r
just keep upping the numbers until i find 7?
Nnesha
  • Nnesha
ii don't understand that decimal question
Mindblast3r
  • Mindblast3r
\[\sqrt{7}\]
Mindblast3r
  • Mindblast3r
say i want to figure the answer out to this, how would i do it? Is the only way to figure this out is by doing it manually?
Mindblast3r
  • Mindblast3r
there are no perfect squares in this.
Nnesha
  • Nnesha
well that's going to be a decimal answer bec factor of 7 is just one 1 and 7
Nnesha
  • Nnesha
yes right
Mindblast3r
  • Mindblast3r
so then you're telling me the only way to figure out the answer is by doing the question manually?
Mindblast3r
  • Mindblast3r
2.6457513 * 2.6457513 = 7
Nnesha
  • Nnesha
square root of 7 is an irrational number you have to use a calculator for that .-.
Nnesha
  • Nnesha
7 is a prime number and square root of 7 would be loooooon number
Mindblast3r
  • Mindblast3r
or do it manually, but that takes ages. ahh i see... i knew it ! okay thank you, that's what i was asking initially.
Nnesha
  • Nnesha
yeee .-... use any calculator ti 84 or 83 or simple cal or google calc don't even try to use *human calculator* :P
Mindblast3r
  • Mindblast3r
LOL!
Nnesha
  • Nnesha
;P

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