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## #1 2009-11-03 11:24:24

MathsIsFun

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### Squares and Square Roots

I decided to go from one to two pages on Squares and Square Roots:

The Original (simple): Squares and Square Roots

The New One (more advanced): Squares and Square Roots in Algebra

Does it cover it well?

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  - Leon M. Lederman

## #2 2009-11-04 00:53:29

bobbym

Online

### Re: Squares and Square Roots

MathsisFun;

#### MathsisFun wrote:

Does it cover it well?

Yes.

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

## #3 2009-11-04 01:37:32

mathsyperson
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### Re: Squares and Square Roots

Good pages!
The one change I'd make is to add a bit more explanation to when you say √2 * √2 = 2.

Why did the vector cross the road?
It wanted to be normal.

## #4 2009-11-04 07:16:00

MathsIsFun

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### Re: Squares and Square Roots

Thanks, will do

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  - Leon M. Lederman

## #5 2009-11-07 18:22:15

Anakin
Full Member

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### Re: Squares and Square Roots

#### mathsyperson wrote:

Good pages!
The one change I'd make is to add a bit more explanation to when you say √2 * √2 = 2.

√2 * √2 = √(2*2) = √4 = 2

About that.. ^, if you really want to, you can also state that the √a * √b = √ab is not always true.

For instance, - 1 = i^2 = i * i = √-1 * √-1 = √(-1*-1) = √1 = 1

That is untrue, so if you are really bored enough, you can add that and explain why.'