LOTS OF POINTS Part A:Create a 5th degree polynomial in standard form. How do you know it's in standard form?
Part B: Explain the closure property as it relates to addition of polynomials. Give an example.​

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A. A fifth degree polynomial is defined by .

B. The closure property in relation to addition of polynomials is defined by following expression:

, ,

For   and , we know that .

Step-by-step explanation:

A. A polynomial is in standard form if and only if is written in the following form:

,  (1)

Where:

- Grade of the i-th monomial.

- Grade of the polynomial.

- i-th coefficient of the polynomial.

Then, a fifth degree polynomial in standard form is:

(3)

B. The closure property in relation to addition of polynomials is defined by following expression:

, ,  (3)

Let proceed to demonstrate this closure property for every polynomial:

1)  Given.

2)  Sum property/Associative property.

3)  Sum property/Result.

Let consider that  and , then we know by closure property for addition of polynomials that: