Algebra
OpenStudy (anonymous):

Factor Completely: 8x^4 - 20x^3 - 12x^2

OpenStudy (texaschic101):

what is the highest number that goes into 8,20,and 12 ??

OpenStudy (anonymous):

4 i think

OpenStudy (texaschic101):

yes...and what goes into x^4, x^3, and x^2 ?

OpenStudy (texaschic101):

let me rephrase that...what can be taken out of x^4, x^3 and x^2 ?

OpenStudy (anonymous):

1 right?

OpenStudy (texaschic101):

no.....which is the smallest x ?

OpenStudy (anonymous):

oh x^2

OpenStudy (texaschic101):

so we can factor out 4x^2

OpenStudy (anonymous):

okay, how do you do that? I don't remember

OpenStudy (texaschic101):

4x^2(2x^2 - 5x - 3) and if you multiply the 4x^2 through the parenthesis, you end up with the original problem : 8x^4 - 20x^3 - 12x^2)

OpenStudy (anonymous):

Oh okay i remember learning that! But i can't remember what to do next? is that the answer?

OpenStudy (texaschic101):

no...it can be factored further... 4x^2(x - 3)(2x + 1)

OpenStudy (anonymous):

wow, i didn't know that, i forgot that step

OpenStudy (texaschic101):

well...sometimes it can be factored more and sometimes it can't. This time it could.

OpenStudy (anonymous):

oh okay, is that the final answer?

OpenStudy (texaschic101):

yes it is :)

OpenStudy (anonymous):

Thank you soooo Much!! i have other questions i am going to post after i close this one that are identical that i need help on too!

OpenStudy (texaschic101):

no problem :)