Math 2 Name:_____________________________
Equation Solving by Factoring or Completing the Square Directions: Use this flowchart, and your knowledge of the methods to solve each equation.
Example: Solve for x: 12𝑥! + 12𝑥! + 3𝑥 = 0
Step 1: Factor out GCF à 3𝑥(4𝑥! + 4𝑥 + 1) = 0 Step 2: The result (4𝑥! + 4𝑥 + 1) still has three terms and is non-‐monic. Step 3: It is a perfect square trinomial. 4𝑥! + 4𝑥 + 1 = 2𝑥 ! + 2 ∙ 2𝑥 ∙ 1+ 1! so
3𝑥(4𝑥! + 4𝑥 + 1) = 3𝑥(2𝑥 + 1)! = 0 Step 4: Use ZPP to solve à 3𝑥 = 0 and 2𝑥 + 1 = 0 so 𝑥 = 0 𝑜𝑟 − 0.5 Directions: Solve for x. Show all work. Complete on a separate sheet of paper.
1. 𝑥! − 5𝑥 + 3 = 0 2. 𝑥! + 4𝑥 − 5 = 0 3. 𝑥! − 5𝑥 + 6 = 0 4. −7𝑥 − 12 = −𝑥! 5. 𝑥! + 12𝑥 + 20 = 0 6. 2𝑥! − 5𝑥 − 24 = 𝑥! 7. 𝑥! + 64 = −16𝑥 8. 𝑥! − 15𝑥 + 56 = 0 9. 𝑥! − 11𝑥 = 60 10. 𝑥! + 17𝑥 + 42 = 0 11. 𝑥! − 49 = 0 12. 𝑥! = 3 13. 9𝑥! + 25 = 0 14. 2𝑥! − 5𝑥 − 3 = 0 15. 𝑥! + 9𝑥 = 0 16. −5𝑥! + 20𝑥 = 0 17. −5𝑥! + 20𝑥! = 0 18. 2𝑥! + 10𝑥 + 8 = 0 19. −10𝑥! + 10𝑥 = −420 20. 𝑥! + 9𝑥! − 22𝑥 = 0 21. −𝑥! − 4𝑥! − 4𝑥 = 0 22. 𝑥! + 6𝑥! + 6𝑥! = 0