Finding Zeros of Quadratic Functions

The video tutorial explains how to find the zeros of quadratic functions that are already factored. It demonstrates the process by setting each factor equal to zero and solving for the variable. The first example involves solving for x in a quadratic equation, resulting in zeros at x = -2 and x = 4. The second example involves solving for z, resulting in zeros at z = -4/3 and z = 1. The tutorial emphasizes the straightforward nature of finding zeros once the quadratic is factored.

What is the first step in finding the zeros of a factored quadratic function?

• Add the factors

• Multiply the factors together

• Set each factor equal to zero

• Divide the factors by two

If you have the equation x + 2 = 0, what is the value of x?

• 4

• 2

• -2

• 0

What is the zero of the function when solving x - 4 = 0?

• -4

• 0

• 4

• 2

In the equation 3Z + 4 = 0, what is the value of Z?

• -4/3

• -3/4

• 4/3

• 3/4

What is the zero of the function when solving Z - 1 = 0?

• 0

• -1

• 2

• 1

Which of the following is a zero of the quadratic function with factors 3Z + 4 and Z - 1?

• 0

• -4/3

• 2

• 3