Comments on: Algebra Help: Square Roots

By: S3v3nt3k

S3v3nt3k — Tue, 18 Aug 2009 03:09:55 +0000

thanks ! you really …
thanks ! you really help

By: Amethysting

Amethysting — Tue, 18 Aug 2009 03:09:55 +0000

Thank you- very …
Thank you- very good explaination- my algebra teacher just looked at me

By: cagedkiller360

cagedkiller360 — Tue, 18 Aug 2009 03:09:55 +0000

And as usual, the …
And as usual, the reply doesn’t appear under the comment I wanted it to.

By: cagedkiller360

cagedkiller360 — Tue, 18 Aug 2009 03:09:55 +0000

Here’s an example …
Here’s an example of this working in real life:

Say you were in an airplane and you were going downwards at a rate of 5m/s. This is the same as going UP at -5m/s.

To figure out the altitude of the plane 30 seconds ago, you would need to multiply by -30 seconds. (Displacement = Velocity x Time)

(-30 sec) x (-5 m/s) = 150 m

i.e. You were 150 metres higher, 30 seconds ago.

By: YUDIANNE

YUDIANNE — Tue, 18 Aug 2009 03:09:55 +0000

thank you alot
thank you alot

By: bachar18

bachar18 — Tue, 18 Aug 2009 03:09:55 +0000

why dont you just …
why dont you just put the magnitude of x? its much more simple then trying to put these restrictions on kids because chances are if they dont understand this basic concept then math isnt really going to be what they are going to use in there career choice

By: nickolayer

nickolayer — Tue, 18 Aug 2009 03:09:55 +0000

A square root of a …
A square root of a square is, essentially, its modulus, or absolute value. So, the root of x^2 is not x, but abs(x).

By: nickolayer

nickolayer — Tue, 18 Aug 2009 03:09:55 +0000

Could you explain …
Could you explain that in a different way?

By: paulinbin360

paulinbin360 — Tue, 18 Aug 2009 03:09:55 +0000

can you teach me …
can you teach me how to solve the area of a rectangle when it has square roots?? please?

By: Amethysting

Amethysting — Tue, 18 Aug 2009 03:09:55 +0000

Why do two …
Why do two negatives multiplied = a positive?