Learn How to Use the Rational Zero Test to Find the Zeros of a Polynomial

Learn How to Use the Rational Zero Test to Find the Zeros of a Polynomial

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

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The video tutorial explains how to determine possible rational zeros of a polynomial using the rational zero test. It covers the process of listing potential zeros as P/Q, where P is the factors of the constant term and Q is the factors of the leading coefficient. The tutorial then discusses methods to verify which of these potential zeros are actual zeros, using graphing technology, synthetic division, and the remainder theorem. Finally, it demonstrates the verification process with an example, confirming the zeros and concluding the lesson.

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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the Rational Zero Test help determine?

All possible rational zeros of a polynomial

The exact zeros of a polynomial

The degree of a polynomial

The factors of a polynomial

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the Rational Zero Test, what does 'P' represent?

Factors of the constant term

The sum of the coefficients

Factors of the leading coefficient

The degree of the polynomial

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the next step after listing all possible rational zeros?

Graphing the polynomial

Testing each possible zero using synthetic division or the remainder theorem

Finding the derivative of the polynomial

Solving the polynomial equation

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method can be used to verify if a potential zero is an actual zero?

Differentiation

Integration

Synthetic division

Long division

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to the remainder theorem, if x = a is a zero, what is true about f(a)?

f(a) = 1

f(a) = 0

f(a) = a

f(a) = -1

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of synthetic division if a number is a zero of the polynomial?

A positive remainder

A negative remainder

A zero remainder

A non-zero remainder

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the actual zeros identified in the final section?

5, 4, and 3

1, 0, and -1

6, 3, and 2

3, 2, and 1