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Which of the following shows the polynomial below written in descending order?

[tex]\[ 4x^2 - x + 8x^6 + 3 + 2x^{10} \][/tex]

A. [tex]\[ 2x^{10} + 4x^2 - x + 3 + 8x^6 \][/tex]

B. [tex]\[ 2x^{10} + 8x^6 + 4x^2 - x + 3 \][/tex]

C. [tex]\[ 3 + 2x^{10} + 8x^6 + 4x^2 - x \][/tex]

D. [tex]\[ 8x^6 + 4x^2 + 3 + 2x^{10} - x \][/tex]

Answer :

To rewrite the given polynomial in descending order, we need to order the terms by decreasing exponents of [tex]\(x\)[/tex]. Let's break down the given polynomial:

[tex]\[ 4x^2 - x + 8x^6 + 3 + 2x^{10} \][/tex]

Here's how to rearrange the terms:

1. Identify the exponents:
- [tex]\(2x^{10}\)[/tex] has an exponent of 10
- [tex]\(8x^6\)[/tex] has an exponent of 6
- [tex]\(4x^2\)[/tex] has an exponent of 2
- [tex]\(-x\)[/tex] is equivalent to [tex]\(-1x^1\)[/tex], so its exponent is 1
- [tex]\(3\)[/tex] has an exponent of 0 (because it's a constant term)

2. Order the terms from highest to lowest exponent:
- The term with the highest exponent is [tex]\(2x^{10}\)[/tex].
- Next comes [tex]\(8x^6\)[/tex].
- Then [tex]\(4x^2\)[/tex].
- After that is [tex]\(-x\)[/tex] (or [tex]\(-1x^1\)[/tex]).
- Finally, the constant [tex]\(3\)[/tex].

3. Rewrite the polynomial in descending order:
[tex]\[
2x^{10} + 8x^6 + 4x^2 - x + 3
\][/tex]

Now let's see which of the provided options matches our reordered polynomial:

- Option A: [tex]\(2 x^{10}+4 x^2-x+3+8 x^6\)[/tex]
- Option B: [tex]\(2 x^{10}+8 x^6+4 x^2-x+3\)[/tex]
- Option C: [tex]\(3+2 x^{10}+8 x^6+4 x^2-x\)[/tex]
- Option D: [tex]\(8 x^6+4 x^2+3+2 x^{10}-x\)[/tex]

The correct order is found in Option B: [tex]\(2x^{10} + 8x^6 + 4x^2 - x + 3\)[/tex].

So, the polynomial written in descending order is correctly represented by Option B.

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