Solving a quadratic equation when not equal to zero by factoring

The video tutorial explains how to solve the equation 4X = 21 by setting it as a function equal to zero, factoring it, and applying the zero product property to find the zeros. The process involves determining numbers that multiply to -21 and add to -4, leading to the solutions X = 7 and X = -3.

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

• Add 21 to the function

• Set the function equal to zero

• Divide the function by X

• Multiply the function by zero

What operation is performed to set the function X^2 - 4X - 21 equal to zero?

• Multiplying by 4

• Dividing by X

• Adding 21

• Subtracting 21

Which property is applied after setting the function equal to zero?

• Zero product property

• Addition property

• Multiplication property

• Division property

What are the two numbers that multiply to -21 and add to -4?

• -3 and 7

• 3 and -7

• 7 and -3

• -7 and 3

What are the solutions for the equation X^2 - 4X - 21 = 0?

• X = -7 and X = -3

• X = 3 and X = -7

• X = -3 and X = 7

• X = 7 and X = 3