Solving an equation by quadratic formula

Solving an equation by quadratic formula

Assessment

Interactive Video

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Quizizz Content

Mathematics

11th Grade - University

Hard

The video tutorial explains how to work with quadratic equations, focusing on writing them in standard form, calculating the discriminant, and using the quadratic formula to find solutions. It demonstrates the process of identifying coefficients, calculating the discriminant, and determining the nature of the roots. The tutorial concludes with applying the quadratic formula to find the roots of the equation, emphasizing simplification and interpretation of results.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for the discriminant in a quadratic equation?

B^2 + 4AC

B^2 - 4AC

B^2 / 4AC

B^2 * 4AC

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the discriminant of a quadratic equation is a perfect square, what does it indicate about the roots?

Two complex roots

One real root

Two real rational roots

No roots

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in applying the quadratic formula to solve an equation?

Simplify the equation

Identify the coefficients

Calculate the discriminant

Find the sum of the roots

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the quadratic formula, what does the term 'opposite of B' refer to?

The negative of B

The reciprocal of B

The absolute value of B

The square of B

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the solutions to the quadratic equation in the final section?

1/2 and -3/4

1/3 and -2/5

1/4 and -3/5

1/5 and -3/6