MTH 119 — Spring — 2005
Essex County College — Division of Mathematics
Quiz # 81— March 16, 2005
Name:
Signature:
Show all work clearly and in order, and box your final answers. Justify your answers algebraically
whenever possible. You have 20 minutes to take this 10 point quiz. When you do use your
calculator, sketch all relevant graphs and write down all relevant mathematics.
1. Given f(x) = 2x3
−9x2+ 4x+ 15.
(a) List the y-intercept as a point.
(b) List all candidate rational roots.
(c) Verify that x= 3 is a rational root of f(x).
(d) Divide f(x) by x−3.
1This document was prepared by Ron Bannon using L
A
T
E
X 2ε.
1
