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anonymous

  • 5 years ago

5+ radical 7 divided by 5- radical 7. simplify the expression.

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  1. anonymous
    • 5 years ago
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    (32 + 10 times (Rad 7)) divided by 12

  2. anonymous
    • 5 years ago
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    can't you reduce that answer to 16 + 5 times radical 7 divided by 9

  3. anonymous
    • 5 years ago
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    SO what I did was Multipiy the whole thing by 5 + Rad. 7 to get rid of the Rad. in teh denominator (5- Rad. 7) (5 + Rad.7)

  4. anonymous
    • 5 years ago
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    That gives me 25 + 7 on the denominator, not 12, I'm sorry! >.< On the numerator, I got (5 + Rad.7) square. = 25 + 10Rad.7 + 7

  5. anonymous
    • 5 years ago
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    isnt the denominator 25 - 7?

  6. anonymous
    • 5 years ago
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    oh yes, I was right the first time! ROFL

  7. anonymous
    • 5 years ago
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    so you got it now?

  8. anonymous
    • 5 years ago
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    because you end up with 25 - radical 49

  9. anonymous
    • 5 years ago
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    yes, yes! xD

  10. anonymous
    • 5 years ago
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    yeah but in your answer you had (32 + 10 times (Rad 7)) divided by 12

  11. anonymous
    • 5 years ago
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    shouldnt it be divided by 18?

  12. anonymous
    • 5 years ago
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    Yes....T.T My brain went dead sometimes! So you got it! ^^

  13. anonymous
    • 5 years ago
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    and then you can simplify it into 16 + 5 radical 7 divided by 9?

  14. anonymous
    • 5 years ago
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    Yes

  15. anonymous
    • 5 years ago
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    hanh, how would you find the derivative of e^2x/1+x?

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