Discriminant and Quadratic Formula Practice

If the discriminant is negative, then the quadratic has:

• 1 Real Solution

• 2 Real Solutions

• Half a Solution

• 2 Complex (imaginary) Solutions

Use the quadratic formula to solve 2x² + 2x - 12?

• -2, 3

• 2, 3

• 2, -3

• -2, -3

What are the solutions to x² - 3x = 5?

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To prepare to do the quadratic formula,

set one side equal to zero:

-2x² = 7x - 4

• -2x² - 7x + 4 = 0

• -2x² +7x - 4 = 0

• -2x² - 7x - 4 = 0

• -2x² + 7x + 4 = 0

The discriminant is

• ax² + bx + c

• b - 4ac

• b² - 4ac

• b² + 4ac

The discriminant formula is

• ax² + bx + c

• b - 4ac

• b² - 4ac

• b² + 4ac

The discriminant is

• aX²  + bX  +  c

• b - 4ac

• b² - 4ac

• b² + 4ac

• A
• B
• C
• D

Find the solutions:

• -4, 2

• -2, 4

• -16

• -4

• 369

• -271