anonymous
  • anonymous
Rationalize the numerator of the expression. Then simplify your answer. (√7 – 3)/5. my answer is incorrect. i have -2/5(√7+3)
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
√7 – 3) * √7 + 3) = 7 - 9 = -2 also multiply 5 by (√7 + 3): (√7 – 3)/5 = -2 / 5(√7 + 3) - looks like you are right
anonymous
  • anonymous
it said i was wrong though. should i distribute the 5? because it says to simplify.
radar
  • radar
\[\sqrt{7-3}\over5 \]???

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radar
  • radar
2/5
anonymous
  • anonymous
yea - could be - sqrt refers to (7-3)
anonymous
  • anonymous
its just √7-3, the √is only above the 7.
radar
  • radar
Never mind
anonymous
  • anonymous
the question as you typed it is a bit odd - can you check the original?
anonymous
  • anonymous
(√7-3)/(5)
anonymous
  • anonymous
|dw:1327958668542:dw|
anonymous
  • anonymous
beats me! i cant see whats wrong with your answer
anonymous
  • anonymous
ill try and distributing the answer
phi
  • phi
put in more parens?? 2/(5(√7+3))
anonymous
  • anonymous
lol it had to be distributed :P thanks fellas

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