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## 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)*

Pre-Calculus with GeoGebra

Parametric functions - a. The Unit Circle

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