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-2640
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-2640
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5+9+16+25+36+49+64+81+100-55^{2}
Add 1 and 4 to get 5.
14+16+25+36+49+64+81+100-55^{2}
Add 5 and 9 to get 14.
30+25+36+49+64+81+100-55^{2}
Add 14 and 16 to get 30.
55+36+49+64+81+100-55^{2}
Add 30 and 25 to get 55.
91+49+64+81+100-55^{2}
Add 55 and 36 to get 91.
140+64+81+100-55^{2}
Add 91 and 49 to get 140.
204+81+100-55^{2}
Add 140 and 64 to get 204.
285+100-55^{2}
Add 204 and 81 to get 285.
385-55^{2}
Add 285 and 100 to get 385.
385-3025
Calculate 55 to the power of 2 and get 3025.
-2640
Subtract 3025 from 385 to get -2640.
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