Monday, September 18, 2006
posted by Marcus at 8:57 PM
Okay, so everybody remembers factoring from when you were in 7th grade
So a quick example would do:
18's factors are 1,2,3,6,9,18
24's factors are 1,2,3,4,6,8,12,24
so the greatest common factor (gcf) for 18 and 24 is 6

so when factoring a polynomial, we do almost the same: you find the GCF for the coefficient or constansts just as you would any other number, but you can have a variable also:
factor 6x-8y, it's factored 2(3x-4y). If you multiply 2 by 3x-4y you end up with the same as you started with! So another example is 25x2-15x is factored as 5x(5x-3).

Get It? Got it? Good, then we can go on to factoring simple trinomials

It's just like factoring before, except you have three terms so 3x3-9x2-30x is factored 3x(x-5)(x+2)

I hope that you guys learned from this, becuase this is my first blog post, and I had to use subscript for exponents, so they're a little low.
Oh, and today's assignment was EXERCISE 2, ALL QUESTIONS