anonymous
  • anonymous
5+ radical 7 divided by 5- radical 7. simplify the expression.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
(32 + 10 times (Rad 7)) divided by 12
anonymous
  • anonymous
can't you reduce that answer to 16 + 5 times radical 7 divided by 9
anonymous
  • anonymous
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)

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anonymous
  • anonymous
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
anonymous
  • anonymous
isnt the denominator 25 - 7?
anonymous
  • anonymous
oh yes, I was right the first time! ROFL
anonymous
  • anonymous
so you got it now?
anonymous
  • anonymous
because you end up with 25 - radical 49
anonymous
  • anonymous
yes, yes! xD
anonymous
  • anonymous
yeah but in your answer you had (32 + 10 times (Rad 7)) divided by 12
anonymous
  • anonymous
shouldnt it be divided by 18?
anonymous
  • anonymous
Yes....T.T My brain went dead sometimes! So you got it! ^^
anonymous
  • anonymous
and then you can simplify it into 16 + 5 radical 7 divided by 9?
anonymous
  • anonymous
Yes
anonymous
  • anonymous
hanh, how would you find the derivative of e^2x/1+x?

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