veja como um sigma resolve inequações

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*1 Tópicos teóricos abordados*
• Alternância de sinais em inequações

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*2 Enunciado* Ø

_Caso você tenha resolvido o problema por um caminho alternativo, não deixe de comentá-lo para assim enriquecermos a discussão_

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*3 Sugestão de problemas*

Envie uma sugestão de problema e eu a resolverei em vídeo – https://bit.ly/QED_forms

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*Informações do vídeo*

*Música* – you're in love with someone you can't have (a classical) Dark academia playlist

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