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Which Answer Describes the Polynomial 3X^3+4X^2-7?

Polynomials are algebraic expressions that consist of variables raised to non-negative integer powers, multiplied by coefficients. They play a crucial role in algebra and are widely used in various mathematical applications. In this article, we will discuss the polynomial 3X^3+4X^2-7 and analyze its characteristics. We will also address some frequently asked questions related to polynomials at the end.

The polynomial 3X^3+4X^2-7 is a third-degree polynomial, also known as a cubic polynomial. It is composed of three terms, each with a different degree. The highest degree term is 3X^3, followed by 4X^2, and finally -7, which is a constant term. Let’s break down the polynomial further to understand its components.

Term 1: 3X^3

This term consists of the coefficient 3 and the variable X raised to the power of 3. The coefficient determines the scale or magnitude of the term, while the variable and its exponent represent the unknown quantity being raised to a certain power. In this case, X is the unknown variable, and it is raised to the power of 3.

Term 2: 4X^2

Similar to the previous term, this term consists of the coefficient 4 and the variable X raised to the power of 2. The coefficient 4 determines the scale of this term, and X is the unknown variable raised to the power of 2.

Term 3: -7

This term is a constant term, as it does not contain any variable. In this case, it is the constant -7.

Now that we understand the structure of the polynomial, let’s analyze some of its important characteristics.

Degree:

The degree of a polynomial is determined by the highest exponent in the polynomial. In this case, the highest exponent is 3, which makes the polynomial a third-degree polynomial or a cubic polynomial.

Leading Coefficient:

The leading coefficient is the coefficient of the term with the highest degree. In this polynomial, the leading coefficient is 3, as it multiplies the highest degree term 3X^3.

Zeros or Roots:

To find the zeros or roots of a polynomial, we set the polynomial equal to zero and solve for X. In the case of 3X^3+4X^2-7, finding the exact zeros requires advanced mathematical techniques. However, we can use numerical methods or graphing calculators to approximate the zeros.

Graph:

The graph of a polynomial provides a visual representation of the polynomial’s behavior. For the polynomial 3X^3+4X^2-7, the graph will exhibit a curve with varying concavity. The exact shape of the graph will depend on the values of X and Y.

Now, let’s address some frequently asked questions related to polynomials:

FAQs:

Q: What is a polynomial?

A: A polynomial is an algebraic expression consisting of variables raised to non-negative integer powers, multiplied by coefficients.

Q: How do you determine the degree of a polynomial?

A: The degree of a polynomial is determined by the highest exponent in the polynomial.

Q: What is a cubic polynomial?

A: A cubic polynomial is a polynomial of degree three, which means it contains terms with the variable raised to the power of three.

Q: How do you find the zeros of a polynomial?

A: To find the zeros of a polynomial, set the polynomial equal to zero and solve for the variable.

Q: What does the leading coefficient represent in a polynomial?

A: The leading coefficient is the coefficient of the term with the highest degree in a polynomial.

In conclusion, the polynomial 3X^3+4X^2-7 is a third-degree polynomial or a cubic polynomial. It consists of three terms, each with a different degree and coefficient. The polynomial’s characteristics, such as degree, leading coefficient, zeros, and graph, help understand its behavior and properties.

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