Thread: Help!!!

how would you solve X2- X - 6
X2 - 4

Please give me some examples if you can!!!

P.S. the two is supposed to mean X squared

You have only given an expression(not an equation).so can't be solved for x.

I meant x2-x-6 over x2-4

Ok so you want to simplify this.
A)x^2-x-6=(x+2)(x-3)
recall that
a^2-b^2=(a+b)(a-b)
so(B) x^2-4=(x+2)(x-2)
dividing A by B we get
(x+2)(x-3)/(x+2)(x-2)
=(x-3)/x-2
hope this helps.you may ask any doubt

how did you get (x+2)(x-3)/(x+2)(x-2)? i'm trying to study for a college placement test and i've never even learned math like this so walk me through it if you don't mind!

Please have a look at this link to learn more about factoring polynomials:
College Algebra Tutorial on Factoring Polynomials