Please help me with just part b part a
create a Third-degree polynomial in standard form how do you know it is in standard form?
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.part b
explain the closure property as it relates to addition of polynomials give an example

answer for part a tell me if it makes sense

3x^3 + 6x^2 + 5x - 9
I know this is a third-degree polynomial in standard form because the highest degree identifies the degree of polynomial (3x^3) is the highest degree it’s also written in descending order of exponents with standardize form to write a polynomial

PLEASE HELP ME WITH PART B
explain the closure property as it relates to addition of polynomials give an example?

step-by-step explanation:

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p> q if you calculate p is100 q is 79

80%

step-by-step explanation:

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1