Solving Quadratics Practice

Answer explanation

Tags

A2.A-REI.B.4

Mathematical Equivalence

ON

Answer explanation

Tags

A2.A-REI.B.4

Solve the quadratic equation: 2x² + 2x - 12 = 0

• -2, 3

• 2, 3

• 2, -3

• -2, -3

The discriminant is

• aX²  + bX  +  c

• b - 4ac

• b² - 4ac

• b² + 4ac

Solve: k² - 2k = 0

• k = 2 and 0

• k = -2 and 0

• k = 2

• k = 0

Solve using the Quadratic Formula.

• A

• B

• C

• D

What is the discriminant of -2x² − x − 1 = 0

• 76

• -7

• 9

• none of these

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

• 205, 2 Solutions

• -71, No Solutions

• 121, 2 Solutions

• 121, 1 Solution

Solve: k² - 6 = -50

• k = ±4i√11

• k = ±4√11

• k = ±2i√11

• k = ±2√11

Use the Quadratic Formula to solve the Quadratic Equation.
x² + 4x - 9

• -2 ± √13

• -2 ± 2√7

• -2 ± √7

• -2 + √7