alexa-marshall_60c214985c020
alexa-marshall_60c214985c020
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Para que a equação admita duas raízes reais positivas... (O delta) > 0 (Delta) = b² - 4ac (-2m+1)² -4m(m-2) > 0 4m² -4m +1 -4m² + 8m > 0 4m > -1 m > -1/4