Question 820403
3*x^3-5*x^2-48*x+80 factor completely and show work.
----
x = 4 is zero::
-----
4)....3....-5....-48....80
......3....7.....-20...|..0

Quotient: 3x^2 + 7x -20
Factors: (3x-5)(x+4)

=====
Final:: (x-4)(x+4)(3x-5)

=========================
Cheers,
Stan H.
=================