Mrs. Parish's Online Math Classroom

Quadratic Equations and Complex Numbers

3.1 Solving Quadratic Equations

Solve by factoring: 

HW: Factoring WS with KEY

Solve using Square Roots:

HW: 3.1 Solving Quadratics by Taking Square Roots WS and Key

 

3.2 Complex Numbers

Simplifying radicals with a negative in the radical

Solving Quadratics by taking the square root (with complex answers)

HW: 3.2 pg 108(#5-12, 23-29 odd, 37-43 odd, 49-54)

 

Complex Conjugates (not in textbook): How to divide complex numbers using a conjugate

3.1-3.2 Quiz

 

3.3 Completing the Square

Tutorial: Completing the Square

HW: 3.3 (#3-7, 25-28) & Level up WS (do any 10)

 

 

3.4 Solving Quadratic Equations by using the Quadratic Formula

Tutorial and examples (look at page 1 & 2 for quadratic formula examples, & page 3 for an explanation of the discriminant) 

HW: 3.4 pg 127 (#5-17 odd, 33, 34) highlight the discriminant & identify the number/type of solutions for each

 

Choose the best method Square Roots, Factoring, Completing the Square

3.3 pg 117 (#41-50)

 

3.5 Solving Systems of Nonlinear Equations

By Graphing: 

By Elimination and Substitution: 

3.5 pg 136 (#4-10 even, 11-14, 16-24 even, 28-34 even, 37-39) 

 

 

3.6 Graphing Quadratic Inequalities & Systems of Quadratic Inequalities

3.6 pg 144 (#3-6, 7-13 odd, 17-18, 21-31 odd) Graph 27-31 on a number line

 

 

Chapter 3 Review Packet and Key

 

Report your Chapter 3 test scores here!