Quadratic Formula with Complex Solutions

• √9√3 = ±9√3

   

• √9√3 = ±3√3

•  √9√3 = ±33

• √9√3√-1 = ±3√3

   

reorder the solution to 3x² + 2 = 0

Hint: a=3, b = 0, c = 2 and put these values in the Quadratic Formula or solve by Square root

What are the zeros of the function f(x) = x² + 64?

Hint: a:1, b:0, c:64

Solve x² - 5x + 10 = 0

Solve -2x² + 4x = 9

• subtract 9 on both sides

  -2x² + 4x - 9 = 0

  a: -2 b:4 c:-9

• Find a, b, c 

  a: 1 b:3 c:18

If the discriminant is ______ then the Quadratic has no real solutions.

• positive

• negative

• neutral

• zero

What values do you substitute into the discriminant?

x² + 3x = -5

Hint: The symbol ^ means "to the power of"

• b² - 4ac = (3)^2 - 4(1)(-5)

• b² - 4ac = (3)^2 - 4(1)(5)

• b²+ 4ac = (3)^2 + 4(1)(-5)

To use the Quadratic Formula or the Discriminant, and equation has to equal ____

• zero

• 9

• 1

• a negative

• add 7x to one side only

• subtract 9 from each side

• subtract 7x from both sides

• multiply by -6 on both sides