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.