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2k^{2}-k+3-5k^{2}-3k+7
To find the opposite of 5k^{2}+3k-7, find the opposite of each term.
-3k^{2}-k+3-3k+7
Combine 2k^{2} and -5k^{2} to get -3k^{2}.
-3k^{2}-4k+3+7
Combine -k and -3k to get -4k.
-3k^{2}-4k+10
Add 3 and 7 to get 10.
2k^{2}-k+3-5k^{2}-3k+7
To find the opposite of 5k^{2}+3k-7, find the opposite of each term.
-3k^{2}-k+3-3k+7
Combine 2k^{2} and -5k^{2} to get -3k^{2}.
-3k^{2}-4k+3+7
Combine -k and -3k to get -4k.
-3k^{2}-4k+10
Add 3 and 7 to get 10.