Warm Up 9-1
Use long division to find the quotient and remainder for the
problems below.
1. 3792 ÷ 5
2. 4296 ÷ 4
Announcements
Quiz Friday, Test Wednesday
Homework 2.4 pg. 205
◦ Exercises #’s 1-24 even
Long and Synthetic Division
When is it better to use each one?
Answers in
Polynomial Form
◦ (Divisor)*(Quotient) +Remainder
Fraction Form
◦ Quotient + Remainder/Divisor
Remainder Theorem
If a polynomial is divided by x-k, then the remainder is r = f(k).
◦ Plug the zero into the function and you will get the remainder.
What is the remainder when f(x)= 3x2 + 7x – 20 is divided by the following?
a) x – 2
b) x + 1
c) x + 4
Factor Theorem
A polynomial function f(x) has a factor x – k if and only if f(k) = 0.
Homework
2.4 pg. 205
◦Exercises #’s 1-24 even