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8c^{2}-2c-9
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8c^{2}-2c-9
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9c^{2}-2c-c^{2}-9
To find the opposite of c^{2}+9, find the opposite of each term.
8c^{2}-2c-9
Combine 9c^{2} and -c^{2} to get 8c^{2}.
9c^{2}-2c-c^{2}-9
To find the opposite of c^{2}+9, find the opposite of each term.
8c^{2}-2c-9
Combine 9c^{2} and -c^{2} to get 8c^{2}.
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