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04-11-2021
Mathematics

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from y² + 5 y - 7, subtract y² - 3 y - 4

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04-11-2021

[tex] {y}^{2} + 5y - 7 - ( {y}^{2} - 3y - 4) \\ {y}^{2} + 5y - 7 - {y}^{2} + 3y + 4 \\ {y}^{2} - y {}^{2} + 5y + 3y - 7 + 4 \\ 8y - 3[/tex]

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