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Ch. R - Review of Basic Concepts
Lial - College Algebra 13th Edition
Lial13th EditionCollege AlgebraISBN: 9780136881063당신이 사용하는 게 아니라요?교과서 변경
1장, 문제 21

Identify each expression as a polynomial or not a polynomial. For each polynomial, give the degree and identify it as a monomial, binomial, trinomial, or none of these. 5

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Step 1: Understand the definition of a polynomial. A polynomial is an algebraic expression consisting of terms that are variables raised to non-negative integer exponents, combined using addition, subtraction, and multiplication by constants. No variables can be in denominators, under roots, or have negative or fractional exponents.
Step 2: Examine the given expression, which is the number 5. Since 5 is a constant term, it can be considered a polynomial with no variable terms.
Step 3: Determine the degree of the polynomial. The degree of a polynomial is the highest exponent of the variable in the expression. Since 5 has no variable, its degree is 0.
Step 4: Classify the polynomial by the number of terms. A monomial has one term, a binomial has two terms, and a trinomial has three terms. Since 5 is a single term, it is a monomial.
Step 5: Conclude that the expression 5 is a polynomial, specifically a monomial of degree 0.

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주요 개념

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Definition of a Polynomial

A polynomial is an algebraic expression consisting of variables and coefficients combined using only addition, subtraction, and multiplication by non-negative integer exponents. Expressions with variables raised to negative or fractional powers, or involving division by variables, are not polynomials.
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가이드 코스
05:13
Introduction to Polynomials

Degree of a Polynomial

The degree of a polynomial is the highest power of the variable in the expression. For example, in 3x^4 + 2x^2, the degree is 4. The degree helps classify polynomials and understand their behavior.
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가이드 코스
05:16
Standard Form of Polynomials

Classification by Number of Terms

Polynomials are classified based on the number of terms: a monomial has one term, a binomial has two terms, and a trinomial has three terms. If there are more than three terms, it is simply called a polynomial without a special name.
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4:47
The Number e