©2010, Dr. Jennifer L. Bell, LaGrange High School, LaGrange, Georgia Adapted from various sources

~BINGO!~~BINGO!~

• The winner who says “BINGO” at the The winner who says “BINGO” at the appropriate time will get a mystery prize!appropriate time will get a mystery prize!

• Anyone acting poorly will be disqualified.Anyone acting poorly will be disqualified.

NumbersNumbers• Place the following numbers in Place the following numbers in

any empty box along with a FREE any empty box along with a FREE space. These numbers represent space. These numbers represent answers to quadratic equations.answers to quadratic equations.

0, 6 ±4i ±3 2±i -5/3, 1 ±2i√3

1±√6 -1/2, -7 ±2i√2 2±2√3 1, -7 -3±√69/10

±2√3 0, 8 ±i√11 10, 1 -7±√33/211/2, -1

1±3i√3/2 4±3i√2/2 3 1/3, 7 -1±2i -2±√6

1 Solve by factoring.

2x2 + 15x + 7 = 0

2

3x2 + 2x – 5 = 0

Solve by factoring.

3

–x2 + 16x – 12 = 5x – 2

Solve by factoring.

4

3x2 – 9x = x2 + 11

Solve by factoring.

5

3x2 + 7 = 22x

Solve by factoring.

6

2x2 – 12x = 0

Solve by factoring.

7

3x2 – 24x + 4 = 4

Solve by factoring.

8

-x2 + 6x – 9 = 0

Solve by factoring.

9

x2 + 12 = 24

Solve by taking the square root.

10

2x2 + 24 = -8

Solve by taking the square root.

11

5 – 3x2 = 29

Solve by taking the square root.

12

(x + 3)2 = 16

Solve by taking the square root.

13

(x – 2)2 = 12

Solve by taking the square root.

14

20 – 2x2 = 2

Solve by taking the square root.

15

4x2 = 3x2 – 11

Solve by taking the square root.

16

3x2 = x2 – 12

Solve by taking the square root.

17

x2 + 2x – 5 = 0

Solve by using the quadratic formula.

18

x2 + 9x + 1 = 2x – 3

Solve by using the quadratic formula.

19

5x2 + 3x – 3 = 0

Solve by using the quadratic formula.

20

x2 + 3x + 13 = x + 8

Solve by using the quadratic formula.

21

x2 + 4x – 2 = 0

Solve by using the quadratic formula.

22

x2 + 7 = x

Solve by using the quadratic formula.

23

x2 – 4x = -5

Solve by using the quadratic formula.

24

2x2 – 8x – 1 = 0

Solve by using the quadratic formula.

1 -1/2, -7 9 ±2√3 17 1±√6

2 -5/3, 1 10 ±4i 18 -7±√33/2

3 10, 1 11 ±2i√2 19 -3±√69/10

4 11/2, -1 12 1, -7 20 -1±2i

5 1/3, 7 13 2±2√3 21 -2±√6

6 0, 6 14 ±3 22 1±3i√3/2

7 0, 8 15 ±i√11 23 2±i

8 3 16 ±2i√3 24 4±3i√2/2