Monday, September 17, 2007

Factoring

Hi!! everyone!!!
Today we did factoring and it's kind of easy so you don't have to worry too much. :)

Here's the notes that mrs.Ingram wroth to the blackboard;


Factoring
- The numbers or variables that multiply to get another value.

Ex. 1
24

the factors of 24 are;

1 x 24, 2 x 12, 3 x 8, 4 x 6, -6 x -4, -1 x -24, -2 x -12, -3 x -8

Ex. 2

x2 = (x)(x)

Ex. 3


3x3+ 6x + 27


factor---- 3(x3 + 2x +9 )


-- remember you can't factor the numbers and variables inside the bracket because there's no factors of 9 that can get 2.

x2 +2x +9 ----- ax2+ bx + c

Ex. 4


x2 + 6x -7 ( You should find the factor of 7 that if we add or subtract we can get a positive 6 )

factor--- (x-1)(x-7) ( if you want to make sure that you're answer is correct just multiply (x-1) to (x-7)


Mrs. Ingram also give us an assignment, Exercise 2 1-20 except 14 a nd 18

Enjoy your homework :)

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