Thread: Final Exam Help:/ ?

So my Algebra2 Final exam is on thursday and my teacher was/is none the less incompitent . SO needless to say i'm not doing well in his class , just like every other student he teaches . So my question (out of the many of millions i have) is this:
"GIven the polynomial and one of it's factors, find the remaining factors: 5x^3+12x^2-23x-42;(x-2)"
if anyone could possibly help me with this i would greatly apprieciate it.
-kaye.

Since is a factor of , then , for some polynomial . Divide by to find , and then factor the quadratic equation that you find. You will get as the required factors, where and are the roots of the quadratic equation .

Originally Posted by mathFAIL

So my Algebra2 Final exam is on thursday and my teacher was/is none the less incompitent . SO needless to say i'm not doing well in his class , just like every other student he teaches . So my question (out of the many of millions i have) is this:
"GIven the polynomial and one of it's factors, find the remaining factors: 5x^3+12x^2-23x-42;(x-2)"
if anyone could possibly help me with this i would greatly apprieciate it.
-kaye.

synthetic division with the known zero ...

Code:

2] .........5..........12.........-23.........-42
......................10...........44..........42
--------------------------------------------------
............5..........22..........21...........0

note the last line represents the coefficients of the depressed polynomial.

the cubic factors as



and the quadratic will also factor ...



you should know how to find the other two zeros.