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Please help me? :) Rationalize the denominator of √-49/(7-2i) - (4+9i) My answer: 49+21i/58

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

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Other answers:

or is it like this? \[\sqrt{\frac{ -49 }{ 7-2i }-(4+9i)}?\]
yes!!! :))
or is it like this? \[\sqrt{\frac{ -49 }{(7-2i)-(4+9i) }}\]?
which one now? the first, second or the third?
the former was correct ;)
the first one :)
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 ?
= sqrt[(-343-98i)/53]-(4+9i) =sqrt[-6.472-1.85i]-(4+9i)
ok i think we cant simplify them any more :D
thank you kind sir!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11111
ok YW have fun now and good luck ... :D

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