How to solve a quadratic by completing the square

How to solve a quadratic by completing the square

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

Created by

Quizizz Content

FREE Resource

The video tutorial explains how to solve quadratic equations by completing the square. It begins with setting the equation to zero and isolating the variable. The process involves creating a perfect square trinomial by factoring and adjusting the equation. The tutorial then demonstrates solving the equation using inverse operations and simplifying the solution. The method is clearly explained with step-by-step instructions, ensuring a comprehensive understanding of completing the square.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in solving a quadratic equation by completing the square?

Multiply both sides by 2

Set the equation to zero

Divide by the coefficient of x

Add 5 to both sides

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it important to factor out the coefficient of the squared term when completing the square?

To make the equation more complex

To simplify the process of creating a perfect square trinomial

To eliminate the variable

To increase the coefficient of x

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What operation is used to solve for x after forming a perfect square trinomial?

Addition

Multiplication

Subtraction

Square root

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When taking the square root of both sides, what must be included in the solution?

Only the positive root

Only the negative root

Neither root

Both positive and negative roots

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the final solutions for x in the given quadratic equation?

x = 1 and x = 2

x = -1/2 and x = -3/2

x = 0 and x = 1

x = 2 and x = 3