solving quadratic equations by factoring wednesday warm-up€¦ · solving by factoring hw help no...
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9 Solving by Factoring.notebook
1
March 01, 2017
Mar 231:31 PM
Solving Quadratic Equations by FactoringAgenda
Reminders
Wednesday Warm-Up 1.
2.
Warm-Up
Notes
Practice #1-12
Test Friday
Gradebook Closes
Friday If ab = 0, what do you know about either a or b?
Essential QuestionHow can I find the roots of a
quadratic function by
factoring? As measured by
getting 80% correct on the
homework.
Solve for x. 3(x-2)+5=-4
Mar 18:53 AM
Questions, Comments, Concerns??
9 Solving by Factoring.notebook
2
March 01, 2017
Mar 231:31 PM
Solving Quadratic Equations by FactoringEssential Question
How can I find the roots of a quadratic function by factoring? As
measured by getting 80% correct on the homework.
Zero Product Property:
Solve the equations below by factoring.
Mar 231:31 PM
Solving Quadratic Equations by FactoringEssential Question
How can I find the roots of a quadratic function by factoring? As
measured by getting 80% correct on the homework.
9 Solving by Factoring.notebook
3
March 01, 2017
Mar 231:31 PM
Solving Quadratic Equations by FactoringEssential Question
How can I find the roots of a quadratic function by factoring? As
measured by getting 80% correct on the homework.
Mar 231:31 PM
Solving Quadratic Equations by FactoringEssential Question
How can I find the roots of a quadratic function by factoring? As
measured by getting 80% correct on the homework.
9 Solving by Factoring.notebook
4
March 01, 2017
HW: Practice #112, NO WORK, NO CREDIT, NO KIDDING!!!
9 Solving by Factoring.notebook
5
March 01, 2017
Mar 231:31 PM
Solving by Factoring HW HelpNo WORK, No CREDIT, No KIDDING!!
1 & 2. These quadratics are already factored. Set each factor equal to zero and solve for x!3. This is a difference of squares: a2 b2 = (ab)(a+b)4. 6.
5. Move everything to one side!7. Factors of 15 that add to 2 are 3 and 5.8. Factor out a 2 before you start!9. Your FACTORS will always have opposite signs than the xintercepts. So if your xintercept is 1, your factor would be (x 1)10. Distribute w to the parenthesis and subtract 252 from both sides. The factors of 252 that add to 9 are 12 and 21. Once you solve for w, remember that you can't have a negative width!11. Factor out a negative 2. Your answer should be 1 second.12. Area = length x width. Your quadratic should be w2 + 3w 70 = 0. Factor, solve, and don't forget to also find the length!
Need extra pointers? Come to tutorials!!