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princeevee

  • one year ago

simplify

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  1. princeevee
    • one year ago
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    \[\sqrt{12/25}\]

  2. welshfella
    • one year ago
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    you can write this as sqrt12 / sqrt25 also sqrt12 = sqrt4* sqrt3 can you see a way to simplify using the above?

  3. princeevee
    • one year ago
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    i dont get it : (

  4. welshfella
    • one year ago
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    do you know what the square root of 4 and square root of 25 are?

  5. princeevee
    • one year ago
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    2 and 5?

  6. welshfella
    • one year ago
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    right so plug these values in instead of the 2 square roots

  7. princeevee
    • one year ago
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    which is?

  8. welshfella
    • one year ago
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    |dw:1432937879842:dw|

  9. princeevee
    • one year ago
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    \[\sqrt{2)\sqrt{3}}/5?\]

  10. welshfella
    • one year ago
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    no - just replace the radicals ( that is the 2 with the square root signs you worked out just now) with their actual values

  11. princeevee
    • one year ago
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    so what is the answer?

  12. welshfella
    • one year ago
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    i cant give you the answer but i've explained how to get it - you had the 5 at the bottom of the fraction correct

  13. princeevee
    • one year ago
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    \[4\sqrt{3}/5\]

  14. welshfella
    • one year ago
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    almost - why the 4? - its the square root of 4

  15. princeevee
    • one year ago
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    \[2\sqrt{3}/5\]

  16. welshfella
    • one year ago
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    yes

  17. welshfella
    • one year ago
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    tghe way to do these is to try to factor the numbers so that factors include perfect squares another example would be sqrt ( 8/9) = sqrt8 / sqrt9 = sqrt4* sqrt2 / 3 = 2 sqrt2 / 3

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