Finding the solutions of a quadratic by completing the square

The video tutorial explains the process of completing the square to solve quadratic equations. It begins by introducing the concept and demonstrating how to recognize and handle numbers in the equation. The teacher then guides through the steps of factoring and simplifying expressions, emphasizing the importance of common denominators when dealing with fractions. Finally, the tutorial covers solving quadratic equations by taking square roots, including handling plus or minus signs and simplifying the final answer.

What is the value of 1/2 squared?

• 1

• 1/4

• 2

• 1/2

When subtracting a whole number from a fraction, what should you do first?

• Add the whole number to the fraction

• Divide the whole number by the fraction

• Convert the whole number to a fraction

• Multiply the whole number by the fraction

What is the result of subtracting 5 from 1/4?

• -20/4

• -21/4

• -5/4

• -19/4

What is the square root of 4?

• 1

• 4

• 2

• 3

What is the final expression for X in the quadratic equation?

• X = ± 1/2 ± sqrt 21/2

• X = ± 1/2

• X = ± 1/2 ± sqrt 21

• X = ± sqrt 21/2