After arranging the terms in descending powers of a variable, select the opposite of the polynomial.

9 - 12n 2 + 4n 3 - 7n

A) 4n3 - 12n2 - 7n + 9

B) -4n3 + 12n2 + 7n - 9

C) 4n3 + 12n2 + 7n + 9

D) -4n3 - 12n2 + 7n - 9
I need help with this one I dont know how to do it.

Question

After arranging the terms in descending powers of a variable, select the opposite of the polynomial.

9 - 12n 2 + 4n 3 - 7n



A) 4n3 - 12n2 - 7n + 9

B) -4n3 + 12n2 + 7n - 9

C) 4n3 + 12n2 + 7n + 9

D) -4n3 - 12n2 + 7n - 9
I need help with this one I dont know how to do it.

anonymous · Answer

@RyleeC

anonymous · Answer

descending means down highest to low

anonymous · Answer

the powers of the variable are the number after the variable in this case "n"

anonymous · Answer

With that said the answer is A.

anonymous · Answer

I did but im getting the answer D but im not sure thats it

anonymous · Answer

D makes sense, but it has different signs, it saying its negative for no reason

anonymous · Answer

see how 4n3 is positive?

anonymous · Answer

D puts it as a negative

anonymous · Answer

Ok i understand now

anonymous · Answer

good