Quadratic Equations Introduction

Which of the following best describes a quadratic equation?

• A quadratic equation is an equation with a degree of 1.

• A quadratic equation is an equation with a degree of 2.

• A quadratic equation is an equation with a degree of 3.

• A quadratic equation is an equation with a degree of 4.

Which of the following is a quadratic equation?

The values of a, b and c in the quadratic equation ax^{2 }+bx + c = 0 must be in the set of _________.

• Complex Numbers

• Integers

• Rational Numbers

• Real Numbers

• 0

• 1

• -1

• cannot be determined

Select the solutions to the equation

4x² + 11x + 7 = 0

• x = - 1.75

• x = 6

• x = - 1

• x = 1

Solutions of a quadratic equation are also called

• roots

• x-intercepts

• zeros

• All of the above

The quadratic function y = -2x² + 4x + 6 is pictured. What are the solutions to the equation 7.5 = -2x² + 4x + 6?

• x = 0.5

• x = 1.5

• x = 1

• x = 8

• x = 6

What are the solutions to the quadratic equation?

• x = -4

• x = 1

• x = -1

• x = 2

• x = 4

In the quadratic equation 2x^{2 }+11x-40=0, the value of b is _______.

• 2

• 11

• 40

• -40

A quadratic equation is said to be in its standard form if the equation is written on __________