High School

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

\[ 3x^3 + 9x^7 - x + 4x^{12} \]

A. \( 9x^7 + 4x^{12} + 3x^3 - x \)

B. \( 4x^{12} + 3x^3 + 9x^7 \)

C. \( 3x^3 + 4x^{12} + 9x^7 - x \)

D. \( 4x^{12} + 9x^7 + 3x^3 - x \)

Answer :

The polynomial 3x^3 + 9x^7 - x + 4x^12 written in descending order is 4x^12 + 9x^7 + 3x^3 - x. Hence, option D is the correct answer.

In order to write the polynomial in descending order, we arrange the terms in decreasing powers of x.

Given polynomial: 3x^3 + 9x^7 - x + 4x^12

Let's rearrange the terms:

4x^12 + 9x^7 + 3x^3 - x

In this form, the terms are written from highest power to lowest power, which is the descending order.

Hence, the polynomial written in descending order is 4x^12 + 9x^7 + 3x^3 - x.

Therefore, option D is the correct answer as it shows the polynomial written in descending order.

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