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Kudos: 9,264

Mates: 14

I'm year nine doing stuff just before what abuu is doing...
with is like 11 or 12 :S
and i gots questions that abuu cant even solve!
have a go

(3x-2)²-(x+1)²

14/06/2008

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hummer says:

is this the answer

9x^2+2x+5

14/06/2008

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ROOK1E says:

isn't there meant to be at least one minus in there?

btw, con someone confirm if this is correct?

www.sendspace.com/

14/06/2008

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hummer says:

oh i dunno, i think the bottom one is squared so (x-3)^2, i think, im not the best at these

14/06/2008

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Mates: 14

ROOK1E says:

lol, me neither. this is like current year 10 or near 11 my bro said...
i'm only in year 9!

14/06/2008

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repopulating says:

(3x-2)²-(x+1)²

= (3x-x)² - (1+2)²
= (2x)² - (3²)
= 4x - 9

thats what i think anyway

14/06/2008

lol

Kudos: 8,789

Mates: 94

repopulating says:

OR its

(9x-4) - (x+1)
= (9x-x) - (1+4)
= 8x - 5

14/06/2008

lol

Kudos: 9,264

Mates: 14

ROOK1E says:

I think what your thinking is about moving one term from one side of an EQUATION and putting it on the other side reversing the sign.
isn't (3x-2)²-(x+1)² and expression?

14/06/2008

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repopulating says:

ROOK1E said: I think what your thinking is about moving one term from one side of an EQUATION and putting it on the other side reversing the sign.

exactly.

So what's the answer?

14/06/2008

lol

Kudos: 16,650

Mates: 119

insectoid says:

(3x-2)²-(x+1)²

= [3x-2+(x+1)][3x-2-(x+1)]
= (3x-2+x+1)(3x-2-x-1)
= (4x-1)(2x-3)

14/06/2008

http://www.games-den.blogspot.com/

Kudos: 9,264

Mates: 14

ROOK1E says:

can i ask how you got to
= (3x-2+x+1)(3x-2-x-1)
to
= (4x-1)(2x-3)

14/06/2008

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Lawso says:

lol, I have no idea what you guys are talking about...
Year 7= 1+1. lol

14/06/2008

Sydney, EA GANG RANK: Sergeant First Class, EA CO LEADER!!!YAY!

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insectoid says:

Did I get it right?

Otherwise I won't bother teaching you the wrong method lol

*edit*
yep, year 7 math is pathetic Lawso

14/06/2008

http://www.games-den.blogspot.com/

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ROOK1E says:

I agree
I got bored with the intro to algebra. that in out cr*p
I learn algebra in yr5

14/06/2008

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s4m1ul says:

Lawso said: lol, I have no idea what you guys are talking about...

Year 7= 1+1. lol

in year 8 we take it to the next level... i mean really hard maths

year 8 = 1.. wait for it... MINUS 1!!!

14/06/2008

EA Corporal/ Co-Leader|| Adelaide

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ROOK1E says:

amazing.
you'll know algebra when your 65!

14/06/2008

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gdmatt says:

I don't understand any of that... well i do, but i seem to forget all algebra stuff when i get home -_-

My class is going for a 7km walk tomorrow, and won't be at school all day

16/06/2008

Melbourne, Victoria

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ROOK1E says:

walk to where?
or is it like a scenery walk?

16/06/2008

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gdmatt says:

Can't remember where, but it is for Outdoor Ed, so probably like a nature walk or something.

16/06/2008

Melbourne, Victoria

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ROOK1E says:

BORING!

oh well..

at least you gets outta school

16/06/2008

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gdmatt says:

Thats my point, i get out of school, while everyone else has to do work

16/06/2008

Melbourne, Victoria

Kudos: 2,535

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Lawso says:

Lol, you guys musn't get many exerstions(WTF, did I spell that right?

).
Private schools rock!!

16/06/2008

Sydney, EA GANG RANK: Sergeant First Class, EA CO LEADER!!!YAY!

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gdmatt says:

I have had about 6 or 7 excursions for Outdoor Ed alone this year.

16/06/2008

Melbourne, Victoria

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skua says:

yo what up EA gang

thought id drop by

16/06/2008

Staff Sergant

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ROOK1E says:

whuddup!?

I gots city school coming up next term...

have you done that last year matt?
wait in year 9...?

16/06/2008

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