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matrenka [14]
3 years ago
7

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

Mathematics
1 answer:
kondaur [170]3 years ago
6 0

Answer: -4n3+12n2+7n-9

Step-by-step explanation: it basically the opposite sign (positive or negative) switched, and the order backwards. hope that helped

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