Calcule os zeros da função y= x²+5x-14.... Pergunta de ideia deWilliam15987

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Calcule os zeros da função y= x²+5x-14

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DanielaDaniela
${x}^{2} +5x-14 = 0 \\ \\ delta = 25 - 4.( - 14) \\ delta = 25 + 56 = 81 \\ \\ x = \frac{ - 5 + - 9}{2} \\ x' = \frac{ - 5 + 9}{2} =2 \\ x'' = \frac{ - 5 - 9}{2} = 7$

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