When two polynomials are multiplied, each term of the first polynomial is multiplied by each term of the second polynomial. The result is always a polynomial, regardless what the coefficients might be of any of the terms, including the leading coefficients.
Understand that polynomials form a system analogous to the integers, namely, they are closed under the operations of addition, subtraction, and multiplication; add, subtract, and multiply polynomials.
Closure property holds for addition and multiplication of whole numbers. Closure property of whole numbers under addition: The sum of any two whole numbers will always be a whole number, i.e. if a and b are any two whole numbers, a + b will be a whole number. Example: 12 + 0 = 12. 9 + 7 = 16.
Closure Property: When something is closed, the output will be the same type of object as the inputs. For instance, adding two integers will output an integer. Adding two polynomials will output a polynomial. Addition, subtraction, and multiplication of integers and polynomials are closed operations.
Ing to the Associative property, when 3 or more numbers are added or multiplied, the result (sum or the product) remains the same even if the numbers are grouped in a different way. Here, grouping is done with the help of brackets. This can be expressed as, a × (b × c) = (a × b) × c and a + (b + c) = (a + b) + c.
The closure property for polynomials states that the sum, difference, and product of two polynomials is also a polynomial. However, the closure property does not hold for division, as dividing two polynomials does not always result in a polynomial. Consider the following example: Let P(x)=x2+1 and Q(x)=x.
Closure Property: The closure property states that the sum of two polynomials is a polynomial. This means that if you add any two polynomials together, the result will always be another polynomial. For example, if you have the polynomials P(x)=x2+2 and Q(x)=3x+4, their sum P(x)+Q(x)=x2+3x+6 is also a polynomial.
CLOSURE: Polynomials will be closed under an operation if the operation produces another polynomial. Adding polynomials creates another polynomial. Subtracting polynomials creates another polynomail. Multiplying polynomials creates another polynomial.
To multiply polynomials, you multiply every possible pair of polynomials, and add those products up. When you multiply, you multiply the coefficients and add exponents if they have the same base.