Imaginary Numbers Quadratic Formula

What does √-1 = ?

• 1

• -1

• i

• i²

Solve using the Quadratic Formula:

• a

• b

• c

• d

Solve using the Quadratic Formula:  49=-w²

• ± 49i

• ± 7i

• ± 7

• ± 7i√7

Solve
x² + 49 = 0

• -7

• -7

• 7i

• ±7i

√-81

• 9i

• 81i

• -9

• -9i

Simplify: -√-16

• 4i

• -4i

• -i√4

• 4

If the discriminant is negative, you will have....

• two real rational solutions

• two real irrational solutions

• two imaginary solutions

• one real rational solution

If the graph of a quadratic does not touch the x-axis at any point, then it has:

• 1 Real Solution

• 2 Real Solutions

• Half a Solution

• No Real Solution / Imaginary solutions

Describe the solutions to this quadratic graphed above.

• one real rational solution

• two real rational solutions

• two real rational solutions

• two imaginary solutions

The discriminant is

• aX²  + bX  +  c

• b - 4ac

• b² - 4ac

• b² + 4ac