1. Algebra 2cc Section 2.6 Solve quadratic equations using various methods
Methods for solving quadratic equations
Square roots: There is no linear term
x2 – 25 = 0
2. Factoring: try factoring
x2 – 3x – 10 = 0
3. Complete the square: if the leading coefficient is 1 and the linear coefficient is even
x2 – 6x – 3 = 0
4. Quadratic formula: if leading coefficient is not 1 and/or linear coefficient is odd.
2x2 + 7x – 1 = 0
Solve by the easiest method
x2- 8x + 2 = 0

2. Solve and name the method used
3x2 + 5x – 11 = 0
x2 + 5x – 14 = 0

3. Solve and name the method used
½ x2 – 5 = 4
3(x-2)2 – 4 = 23

4. The number of horsepower needed to overcome a wind drag on a certain automobile is given by , N(s) = .005s s where s is the speed of the car in miles per hour. At what speed will the car need to use 200 horsepower to overcome the wind drag?

5. assignment
Worksheet 2.6