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#1 Re: Help Me ! » Simple subtracting square roots? Not to me! » 2013-03-23 22:50:07

Gazzer

Bobbym :- I think I misled you. it should be -6x^2-(sqrt(7))(1-sqrt(7))x^2
anonimnystefy - yes.

Thanks for your help. I have to go now. I'll be back this evening.

#2 Re: Help Me ! » Simple subtracting square roots? Not to me! » 2013-03-23 22:40:16

Gazzer

Yes. That's it.

#3 Re: Help Me ! » Simple subtracting square roots? Not to me! » 2013-03-23 22:35:37

Gazzer

Sorry, I'm rushing. I have to take my wife to London in a minute! I've edited the original.

#4 Re: Help Me ! » Simple subtracting square roots? Not to me! » 2013-03-23 22:29:59

Gazzer

Ha! I can't get that to work either!

As part of a polynomial long divisio is a subtraction  -6x^2 - sqrt(7)(1-sqrt(7)x^2) the answer is (1-sqrt(7))x^2

I don't understand!

#5 Help Me ! » Simple subtracting square roots? Not to me! » 2013-03-23 22:26:20

Gazzer
Replies: 11

Hi,
In the attached image the highlighted subtraction has me stumped. I just can't see how the answer could be (1-sqrt(7))x^2.

I would be very grateful if someone could explain how this is so.

Thanks.

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