Finding the zeros by completing the square when you have a fraction

Finding the zeros by completing the square when you have a fraction

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

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Quizizz Content

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The video tutorial explains how to solve for X using different methods, focusing on completing the square. It begins with an attempt to factor the equation, which fails, leading to the use of completing the square. The instructor details each step, highlights common mistakes, and provides corrections. The tutorial concludes with the final solution and a promise to cover the quadratic formula in another video.

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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in solving the quadratic equation when factoring is not possible?

Graph the equation

Complete the square

Use the quadratic formula

Simplify the equation

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When completing the square, what must be done if there is a coefficient in front of X^2?

Ignore it

Multiply it by the constant term

Factor it out

Add it to both sides

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of adding and subtracting the same value when completing the square?

To simplify the equation

To create a perfect square trinomial

To eliminate the constant term

To change the equation

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you determine the value to add and subtract when completing the square?

Add the coefficients of X and X^2

Multiply the constant term by 2

Divide the linear coefficient by 2 and square it

Use the quadratic formula

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the next step after rewriting the equation as a perfect square trinomial?

Subtract the linear term from both sides

Take the square root of both sides

Multiply both sides by 2

Add the constant term to both sides

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final step in solving the equation after taking the square root?

Divide by the constant term

Add the square root to both sides

Isolate X by subtracting or adding terms

Multiply by the coefficient of X

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the solution to the equation after completing the square?

X = 3 ± sqrt(2) / 2

X = -3 ± sqrt(3) / 2

X = 3 ± sqrt(3) / 2

X = -3 ± sqrt(2) / 2