Pre-Calculus

Mathcasts for pre-calculus:

Find the linear factorization of x^3-4x^2-7x+10 Part 1 Part 2 - Part 2 shows the use of the Virtual TI graphing calculator TRF
Given 2+ 3i is a zero, find the other zeros of f(x)=x^4-4x^3+10x^2+12x-39 (View mathcast)
Find a third degree polynomial with zeros at 3 and 1+i. (View mathcast)
Use synthetic division and the Remainder Theorem to find f(3) for f(x)= 4x^3-x^2+3x+1 (View mathcast)
Draw the graph of f(x)=x(x+3)^2(4-x)^3 clearly labeling the x-intercepts (View mathcast)
Find the potential rational zeros for f(x)=5x^3+x^2-3x-2 (View mathcast)