Algebra 2 - Unit 3 Review

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1a) 0:00 Simplifying Radicals
1b) 3:04 Operations with Complex Numbers
2-4) 13:28 Using the Discriminant to determine the nature of the roots
5) 18:15 Completing the square
6) 24:13 Using the quadratic formula
7) 27:35 Solving Systems by Substitution
8)34:36 Given the focus and directrix, find the equation of a parabola.
9) 36:56 Given the equation of a parabola, find focus and directrix
10) 39:35 Definition of a Parabola
11) 41:39 More focus and directrix
12) 44:49 More focus and directrix