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JamesR4494

  • one year ago

How do I find the square root of 169?

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  1. ParthKohli
    • one year ago
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    You can see and tell that it is \(\pm 13\)

  2. Jamierox4ev3r
    • one year ago
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    just divide 169 by 13 because 13*13 equals 169.

  3. Jack1
    • one year ago
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    for another way, look up "Newton-Raphson" method... long winded but will work out all square roots for you, eg sqrt 3, sqrt 168

  4. JamesR4494
    • one year ago
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    How would I find out that it's 13x13?

  5. Jamierox4ev3r
    • one year ago
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    square roots are just something i memorize

  6. JamesR4494
    • one year ago
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    Is that the only way? to memorize?

  7. Jamierox4ev3r
    • one year ago
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    or there is also jack's way, but it is very long winded

  8. JamesR4494
    • one year ago
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    :c

  9. Jack1
    • one year ago
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    guesstimating you know 10^2 = 100, so must be bigger you know 15^5 = 225, so must be smaller, leaves a range of 4 possibilities

  10. Hunus
    • one year ago
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    Also, you know that it must end with either a three or a seven. And since you know it has to be greater than 10 and less than 15 your only choice is 13

  11. Jack1
    • one year ago
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    or you could get a pile of 169 rocks, and see how many even piles of the same number of rocks as piles you can split them in to...?

  12. Jamierox4ev3r
    • one year ago
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    jack that would take a lot of time lol :)

  13. AonZ
    • one year ago
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    type in calculator derp?

  14. 00015935
    • one year ago
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    13

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