Quadratic Formula Skeleton

The discriminant is

• ax² + bx + c

• b - 4ac

• b² - 4ac

• b² + 4ac

Solve x² - 5x + 10 = 0

• (5 - i√15)/2  ,  (5 + i√15)/2

• (5 - √15)/2  ,  (5 + √15)/2

• (5 - i√65)/2  ,  (5 + i√65)/2

• (5 - √65)/2  ,  (5 + √65)/2

Solve for x:

3x² - 6x + 6 = 0

• x = 1± i

• x = 3, -6

• x = 4.8, 2.7

• Undefined

Identify the 'b' value: y = 16x² -8x -24

• 16

• -8

• 8

• -24

What is the discriminant in the Quadratic Formula?

• -b + 4ac

• b - 4ac

• -b² - 4ac

• b² - 4ac

If the discriminant is positive, how many solutions does the graph have?

• 2

• 1

• 0

If the discriminant is zero, how many solutions does the graph have?

• 2

• 1

• 0

How many real solutions does 2a² - 5a + 5 = 0 have?

• 2

• 1

• 0

Find the discriminant: 3k² + k - 1 = 0

• 36

• -11

• 13

• -20

How many real solutions does 3k² + k - 1 = 0 have?

• 2

• 1

• 0