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Questions and Answers
The degree of a polynomial is the lowest degree of its terms.
The degree of a polynomial is the lowest degree of its terms.
False (B)
A monomial is a polynomial with a degree of 1.
A monomial is a polynomial with a degree of 1.
True (A)
Polynomials can be divided using the standard rules of algebra.
Polynomials can be divided using the standard rules of algebra.
False (B)
A trinomial is a polynomial with three terms.
A trinomial is a polynomial with three terms.
Polynomials can be simplified by combining unlike terms.
Polynomials can be simplified by combining unlike terms.
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Study Notes
Definition
- A polynomial is an expression consisting of variables and coefficients combined using only addition, subtraction, and multiplication.
- The variables are raised to non-negative integer powers.
Terms
- A term is a single element of a polynomial, consisting of a coefficient and a variable(s) raised to a power.
- Examples: 3x, 2x^2, 5
Degrees
- The degree of a term is the sum of the powers of the variables.
- The degree of a polynomial is the highest degree of its terms.
- Examples:
- The degree of 3x is 1.
- The degree of 2x^2 is 2.
- The degree of 4x^2 + 2x + 1 is 2.
Classification
- Polynomials can be classified based on their degree:
- Monomials (degree 1): 2x, 3y
- Binomials (degree 2): x^2 + 3x, 2y^2 - 4y
- Trinomials (degree 3): x^3 + 2x^2 - 3x, 2y^3 - 4y^2 + 5y
- Polynomials can also be classified based on the number of terms:
- Monomials (1 term): 2x, 3
- Binomials (2 terms): x^2 + 3x, 2y - 4
- Trinomials (3 terms): x^3 + 2x^2 - 3x, 2y^3 - 4y^2 + 5y
Operations
- Polynomials can be added, subtracted, and multiplied using the standard rules of algebra.
- Example:
- (2x^2 + 3x) + (x^2 - 2x) = 3x^2 + x
- (2x^2 + 3x) - (x^2 - 2x) = x^2 + 5x
- (2x^2 + 3x) * (x^2 - 2x) = 2x^4 - 7x^3 + 6x^2
Simplification
- Polynomials can be simplified by combining like terms.
- Example:
- 2x^2 + 3x + x^2 = 3x^2 + 3x
- x^2 - 2x + 3x = x^2 + x
Definition of Polynomials
- A polynomial is an expression consisting of variables and coefficients combined using only addition, subtraction, and multiplication, with variables raised to non-negative integer powers.
Terms of Polynomials
- A term is a single element of a polynomial, consisting of a coefficient and a variable(s) raised to a power.
- Examples of terms: 3x, 2x^2, 5
Degrees of Polynomials
- The degree of a term is the sum of the powers of the variables.
- The degree of a polynomial is the highest degree of its terms.
- Examples of degrees:
- The degree of 3x is 1.
- The degree of 2x^2 is 2.
- The degree of 4x^2 + 2x + 1 is 2.
Classification of Polynomials
- Polynomials can be classified based on their degree:
- Monomials (degree 1): 2x, 3y
- Binomials (degree 2): x^2 + 3x, 2y^2 - 4y
- Trinomials (degree 3): x^3 + 2x^2 - 3x, 2y^3 - 4y^2 + 5y
- Polynomials can also be classified based on the number of terms:
- Monomials (1 term): 2x, 3
- Binomials (2 terms): x^2 + 3x, 2y - 4
- Trinomials (3 terms): x^3 + 2x^2 - 3x, 2y^3 - 4y^2 + 5y
Operations with Polynomials
- Polynomials can be added, subtracted, and multiplied using the standard rules of algebra.
- Examples of operations:
- (2x^2 + 3x) + (x^2 - 2x) = 3x^2 + x
- (2x^2 + 3x) - (x^2 - 2x) = x^2 + 5x
- (2x^2 + 3x) * (x^2 - 2x) = 2x^4 - 7x^3 + 6x^2
Simplification of Polynomials
- Polynomials can be simplified by combining like terms.
- Examples of simplification:
- 2x^2 + 3x + x^2 = 3x^2 + 3x
- x^2 - 2x + 3x = x^2 + x
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