[Tracy]

I can't find my notes for this, I've completely forgotten what it is and immediately upon school starting up we're getting hammered with it... help?

[perhaps]

LOL! DUDE! i'll totally help you out!
(i forget too since i forget things very easily but my notes are 10 ft away from me [and no, i am not a freak who keeps her notes within a 10 ft radius! they just happen to be near me because i'm going through them and organizing them...oh wow i am the biggest nerd ever! haha its ok, you can make fun of me because it really doesnt bother me lol] and i'll surely help you out tomorrow or within the next few days!!!)

[Tracy]

Thankies.

[GMartin2R]

oh shoot

i can't belive i forgot too:kroll: i can prime factor but i don't know if that's what you're looking for.

shows you how much from the last school years i remember:kroll:

[Tracy]

I know it's the opposite of expanding. And you have to find the LCD somewhere. But other than that it's just a fuzzy mass in my mind...

[perhaps]

hehehe

sorry I havent helped you yet

when do you start school?

September 3rd? I think that's when i start...if it's a Tuesday.

I'll be SURE to help you before then

[dan the man]

You can use substitution. Does that ring a bell?

[Tracy]

Originally posted by perhaps
hehehe

sorry I havent helped you yet

when do you start school?

September 3rd? I think that's when i start...if it's a Tuesday.

I'll be SURE to help you before then

I start August 29th, I believe. The VERY DAY Downhere comes to Ottawa. (I could go see 'em there.) GRRRRR!

[Tracy]

Originally posted by dan the man
You can use substitution. Does that ring a bell?

Nope. I wish I didn't lose the folder with my notes in it.

[perhaps]

Ok, well DEFINATELY somewhere between today and in 2 weeks

hehe that was funnily worded

hehe

oh dear

[Jay42]

Originally posted by perhaps
Ok, well DEFINATELY somewhere between today and in 2 weeks

hehe that was funnily worded

You also spelled definitely funny.

[TruePraise]

hmm, maybe a sample problem thingy will help ya out, if i remember how to do factoring

2x^2-7x = 4

2x^2-7x-4 = 0

(2x+1) (x-4)

x = -.5, 4

that looks right to me, i don't know if that'll help you or not, but i felt like doing a bit of math anyways lol good luck!

TruePraise

[GMartin2R]

oh :kroll:

i should have thought of that

brother...

[perhaps]

Originally posted by Jay42


You also spelled definitely funny.

DEFINATELY

LOL i have always spelled it like that!

this is like when i found out the saying was "Play it by ear" instead of "play it by year"

[perhaps]

ok, i can't find my amazing notes from grade 12 so i'll have to use notes from gr 10....this should be interesting... (if only i could remember things!)

Ok, I'm just gonna give you basic stuff since you're going into grade 10, right?. Tell me if you need more...as I am not sure this will help or not. I'll put one lesson per post and start off simple.

Common Factors

Factoring is the inverse operation to expanding.

P = 2x + 2y (<-- must factor Polynomial!)
= 2(x + y) (woohoo it is factored and no longer expanded! *thumbs up*)

Now, its not always this easy so here's a little more complicated example and with "instructions" after it.

(NOTE: This symbol here "^" means "to the power/exponent of" as I cannot make the number higher and smaller. And remember that "3w" would be the same as "3 X w". )

(NOTE: I put spaces between things like "3x^2 y^3" so you didn't confuse it to be "3x2y^3" or something like that. )


example #1:

3x^2 y^3 - 9x^3 y^4 + 12x^3 y^2)
= (3x^2 y^2) (y - 3xy^2 + 4x)


Find the greatest common factor (GCF).
For "3x^2 y^2"...
"3"...is the GCF of numerical coefficients.
"x^2 y^2" is the GCF pf tje variables - lowest powers of x and y.

Step 1: Write down GCF.
Step 2: Divide each term by the GCF and write the quotient in brackets.


example #2:

m(2x - y) - 5(2x - y) [note --> GCF = 2x - y]
= (2x - y) (m - 5)

Sometimes the GCF is an expression.