Factoring and Quadratic Formula Practice Imaginary Numbers

Solve by ANY method you have learned: x²−2x+11=0

• 1±i√10

• 1±√10

• -1±i√10

• -1±√10

Which method is most efficient for solving: x²+7x+14=0

• Square root method

• Quadratic Formula

• Factoring

• Completing the Square

The discriminant is

• aX²  + bX  +  c

• b - 4ac

• b² - 4ac

• b² + 4ac

If the discriminant equals 0, then the quadratic has:

• Real Solution

• Real Solutions

• Half a Solution

• Imaginary Solutions

What would this quadratic look like in factored form?

• (x - 7)(x + 8)

• (x + 7)(x + 8)

• (x - 7)(x - 8)

• (x + 7)(x - 8)

• 10
• -10
• 10i
• -10i

Which of the following has imaginary solutions?

Find the solutions of the equation 8x^2 + 32 = 0 by using imaginary numbers.

• x = ±5i

• x = ±3i

• x = ±4i

• x = ±2i

Hint: set equation = to 0.

• A

• B

• C

• D

A student is solving a quadratic equation using the quadratic formula. They have correctly gotten to this point and need to simplify completely. What is the correct final answer?