Quadratic Equation from Imaginary Roots

The discriminant is

• aX²  + bX  +  c

• b - 4ac

• b² - 4ac

• b² + 4ac

If the discriminant is negative, then the quadratic has:

• Real Solution

• Real Solutions

• Half a Solution

• Imaginary Solutions

What is this formula?

• This is the speed of light formula.

• This is the quadratic formula.

• This is the zero product property.

• This is scary.

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

• 1±i√10

• 1±√10

• -1±i√10

• -1±√10

Determine the roots of the quadratic equation 7x^2 + 28 = 0 using square roots with imaginary numbers.

• x = 2

• x = 4i

• x = -2

• The roots of the quadratic equation 7x^2 + 28 = 0 are x = 2i and x = -2i.

What are the roots of the quadratic equation 3x² + 12 = 0?

• x = ±2

• x = ±2i

• x = ±4

• x = ±3i

If b²-4ac is negative, the quadratic equation has:

• Two real solutions

• Two imaginary solutions

• One real solution

• No solution

Solve for x:

• x = {-3+2i, -3-2i}

• x = {7, 6}

• x = 2±i√3

• No solution

Find the roots of the equation 5x^2 + 20 = 0 using imaginary numbers.

• x = ±3i

• x = ±4i

• x = ±2i

• x = ±5i

What are the roots of the quadratic equation 3x^2 + 12 = 0?

• x = ±2

• x = ±2i

• x = ±4

• x = ±3i