Complete the Square

Perfect Square Trinomials / Find the "blank"

100

x^2 - 2x + 

1

200

x^2 + 8x + 

16

300

x^2 - 6x +  

9

400

x^2 + 5x + 

25/4

500

x^2 + 9x +

81 / 4

Complete the square

100

x^2 - 4x - 5 = 0

x = 5, -1

200

x^2 + 4x - 21 = 0

x = 3, -7

300

x^2 -6x + 5 = 0

x = 5, 1

400

x^2-20x-53=-9

x = 22 , -2

500

x^2 - 18x - 84 = 4

x = 22, -4

Complete the Square w/ a>1 , i's , & radicals

100

7x^2 - 14x - 21 = 0

x = 3, -1

200

Choose someone fast

Run to Mr. Coury and give him a high five in 30 seconds

300

3x^2 +12x+99=0

x= -2+-i\sqrt29

400

6x^2-12x-66=0

x=1+-2\sqrt3

500

4x^2 - 16x + 64 = 0

x = 2 +- 2i\sqrt 3

CTS to Find the vertex

100

x^2 - 18x + 87 = y

y=(x-9)^2+6

(9,6)

200

x^2 -6x + 13 = y

x = 3, 4

300

y=x²-8x+28

(4, 12)

400

-6x^2+84x-288=y

y = -6(x-7)² + 6

(7,6)

500

x^2 - 2x - 48 = 0

8, -6

No calculators

100

sqrt (20)

2sqrt (5)

200

sqrt (18x^⁴y^⁵)

3x^2y^2 sqrt (2y)

300

3sqrt5 + 2sqrt45

9 sqrt5

400

(2sqrt8)(3sqrt6)

24sqrt3

500

(2+3i)-(4-2i)

-2+5i