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#101 2013-11-15 14:34:56

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 89,031

Re: Change your subject.

I repeated it because of this:

But when 9 is in a square root sign it gives two answers i.e -3 and 3.

I wanted him to be sure that the answer is only 3. 1 answer not 2.


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#102 2013-11-17 20:26:59

EbenezerSon
Member
Registered: 2013-07-04
Posts: 468

Re: Change your subject.

Hi, bobym.

Look the link you provided at page 4 concerning the square roots signs.
It says so:

When two numbers are multiplied within a square root, you can split it into a multiplication of two square roots.
But only when X and Y are both greater than or equal to 0.
My question is:

Which figure is equal to zero before  the splitting will be possible?



wave

Last edited by EbenezerSon (2013-11-17 20:35:26)


I know only one thing - that is that I know nothing

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#103 2013-11-17 21:41:26

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 89,031

Re: Change your subject.

Hi;

I do not see the figure.


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

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