The terms in descending powers of a variable are [tex]\rm 4n^3 - 12n^2 - 7n + 9 [/tex].
Given that
Polynomial; [tex] \rm 9 - 12n ^2 + 4n^ 3 - 7n[/tex]
After arranging the terms in descending powers of a variable, select the opposite of the polynomial.
A polynomial is an expression consisting of coefficients and variables which are also known as indeterminates.
The degree of a polynomial can be defined as the highest degree of a monomial within a polynomial.
The degree of the polynomial can be defined as a polynomial equation having a single variable that has the greatest exponent.
Therefore
The terms in descending powers of a variable are;
[tex]\rm = 9 - 12n ^2+ 4n ^3 - 7n\\ \\ = 4n^3 - 12n^2 - 7n + 9[/tex]
Hence, The terms in descending powers of a variable are [tex]\rm 4n^3 - 12n^2 - 7n + 9 [/tex].
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