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The sum 2n3 + 4n2 - 7 and -n3 + 8n - 9
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The sum 2n3 + 4n2 - 7 and -n3 + 8n - 9

User Sourabh Kumbhar
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(2n³ + 4n² - 7) + (-n³ + 8n - 9)
(2n³ - n³) + 4n² + 8n + (-7 - 9)
n³ + 4n² + 8n - 16
User BjarkeCK
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