Answer :
Let's arrange the terms of the polynomial [tex]\(3x^3 + 9x^7 - x + 4x^{12}\)[/tex] in descending order based on the exponents of [tex]\(x\)[/tex]. Here’s how you can do it step by step:
1. Identify the terms:
- [tex]\(4x^{12}\)[/tex]
- [tex]\(9x^7\)[/tex]
- [tex]\(3x^3\)[/tex]
- [tex]\(-x\)[/tex] (This is equivalent to [tex]\(-1x^1\)[/tex])
2. Order the terms: Arrange these terms from the highest exponent to the lowest exponent.
3. Highest exponent first:
- The term [tex]\(4x^{12}\)[/tex] has the highest exponent, so it comes first.
4. Next highest exponent:
- The next highest exponent is [tex]\(7\)[/tex], corresponding to the term [tex]\(9x^7\)[/tex].
5. Next is [tex]\(3\)[/tex]:
- The exponent [tex]\(3\)[/tex] comes after that with the term [tex]\(3x^3\)[/tex].
6. Lowest exponent:
- Finally, we have the term [tex]\(-x\)[/tex], which has an exponent of [tex]\(1\)[/tex].
Now, putting all these terms together in descending order, we get:
[tex]\[4x^{12} + 9x^7 + 3x^3 - x\][/tex]
Therefore, the polynomial written in descending order is [tex]\(4x^{12} + 9x^7 + 3x^3 - x\)[/tex].
Among the choices provided:
- Option B: [tex]\(4x^{12} + 9x^7 + 3x^3 - x\)[/tex] is the correct arrangement.
The correct answer is B.
1. Identify the terms:
- [tex]\(4x^{12}\)[/tex]
- [tex]\(9x^7\)[/tex]
- [tex]\(3x^3\)[/tex]
- [tex]\(-x\)[/tex] (This is equivalent to [tex]\(-1x^1\)[/tex])
2. Order the terms: Arrange these terms from the highest exponent to the lowest exponent.
3. Highest exponent first:
- The term [tex]\(4x^{12}\)[/tex] has the highest exponent, so it comes first.
4. Next highest exponent:
- The next highest exponent is [tex]\(7\)[/tex], corresponding to the term [tex]\(9x^7\)[/tex].
5. Next is [tex]\(3\)[/tex]:
- The exponent [tex]\(3\)[/tex] comes after that with the term [tex]\(3x^3\)[/tex].
6. Lowest exponent:
- Finally, we have the term [tex]\(-x\)[/tex], which has an exponent of [tex]\(1\)[/tex].
Now, putting all these terms together in descending order, we get:
[tex]\[4x^{12} + 9x^7 + 3x^3 - x\][/tex]
Therefore, the polynomial written in descending order is [tex]\(4x^{12} + 9x^7 + 3x^3 - x\)[/tex].
Among the choices provided:
- Option B: [tex]\(4x^{12} + 9x^7 + 3x^3 - x\)[/tex] is the correct arrangement.
The correct answer is B.
