anonymous
  • anonymous
Please help me? :) Rationalize the denominator of √-49/(7-2i) - (4+9i) My answer: 49+21i/58
Mathematics
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anonymous
  • anonymous
Please help me? :) Rationalize the denominator of √-49/(7-2i) - (4+9i) My answer: 49+21i/58
Mathematics
chestercat
  • chestercat
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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anonymous
  • anonymous
plz put brackets after each expression so that ur ques get clear to me
anonymous
  • anonymous
ok koala ;0
anonymous
  • anonymous
√-49/(7-2i) - (4+9i) is this like this? \[\sqrt{(\frac{ -49 }{ 7-2i })}-(4+9i)?\]

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anonymous
  • anonymous
or is it like this? \[\sqrt{\frac{ -49 }{ 7-2i }-(4+9i)}?\]
anonymous
  • anonymous
yes!!! :))
anonymous
  • anonymous
or is it like this? \[\sqrt{\frac{ -49 }{(7-2i)-(4+9i) }}\]?
anonymous
  • anonymous
which one now? the first, second or the third?
anonymous
  • anonymous
the former was correct ;)
anonymous
  • anonymous
the first one :)
anonymous
  • anonymous
ok the first one is \[\sqrt{\frac{ -49 }{ 7-2i }( \frac{ 7+2i }{ 7+2i })}-(4+9i)\] \[\sqrt{\frac{ -49(7+2i) }{ 49-4i ^{2} }}-(4+9i)\] \[\sqrt{\frac{ -49(7+2i) }{ 49-4(-1) }}-(4+9i)\] can you further simplify them ?
anonymous
  • anonymous
No
anonymous
  • anonymous
= sqrt[(-343-98i)/53]-(4+9i) =sqrt[-6.472-1.85i]-(4+9i)
anonymous
  • anonymous
ok i think we cant simplify them any more :D
anonymous
  • anonymous
thank you kind sir!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11111
anonymous
  • anonymous
ok YW have fun now and good luck ... :D

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