Part A: Create a third-degree polynomial in standard form. How do you know it is in standard form
(5 points)
Part B: Explain the closure property as it relates to addition of polynomials. Give an example. (5 points)
(10 points)

Part A 1+3 x the power of 2 +2x it converted it to standard form.

Part B: For our example, let x^2+3x+2 our first polynomial and 5x^2-7 our second one. Lets subtract them:

x^2+3x+2-(5x^2-7)

x^2+3x+2-5x^2+7

x^2-5x^2+3x-2+7

-4x^2+3x+5

Step-by-step explanation: