Discriminant

What is the formula for the discriminant?

• x = -b/2a

• b² - 4ac

• a² + b² = c²

• x = [-b±√(b²-4ac)]/2a

If the discriminant is equal to 0, how many solutions are there?

• No solutions

• 1 Solution

• 2 Solutions

• Infinite solutions

If the discriminant is equal to 4, how many solutions are there?

• No Solutions

• 1 Solution

• 2 Solutions

• Infinite Solutions

If the discriminant is equal to -2, how many solutions are there?

• No Solutions

• 1 Solution

• 2 Solutions

• Infinite Solutions

When in standard form, what are the values of a, b and c in this quadratic equation?

7x² - 4x + 3 = 5x² + 8

• a = 2 b = -4 c = -5

• a = 7 b = -4 c = 3

• a = 2 b = -4 c = 5

• a = 12 b = -4 c = -5

What is the discriminant of this equation?

-5x² - 6 = 0

• 120

• 36

• 16

• -120

How many solutions would this quadratic equation have?

x² - 6x + 9 = 0

• No Real Solutions

• One Real Solution

• Two Real Solutions

How many solutions would this quadratic equation have?

-8x² + 6x - 4 = 0

• No Real Solutions

• Two Real Solutions

• One Real Solution

What is the discriminant and how many solutions would this quadratic equation have?

4x² + 6x - 4 = 0

• One Real Solutions

• One Real Solution

• Two Real Solutions

What is the discriminant and how many solutions would this quadratic equation have?

-3x² - 5x + 15 = 7

• 205, 2 Solutions

• -71, No Solutions

• 121, 2 Solutions

• 121, 1 Solution