## Quadratics Answer Key

*must show work to receive credit

1. x = -8 or 2

2. x = 4/7 or -4/7

3. x = 0 or 3

4. x = 5 ± i√5

5. x = -3±√11

6. x = 3 or 1/3

7. x = (-3±√41)/2

8. reduced x = (-5±i√5)/-2

9. V (-4, -3) a =1; graph

10. V (1, -6) a=3; graph

11. max ht 23ft after 1.5 sec; will hit ground after 3.2 sec

Last modified: Friday, 13 January 2017, 8:09 AM