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Transforma a la forma ax2 + bx + c = 0

 

begin mathsize 12px style begin bold style negative 1 end style bold space bold x open parentheses begin bold style negative 9 end style bold space bold x bold space bold plus begin bold style 3 end style close parentheses bold space bold minus begin bold style 7 end style bold left parenthesis begin bold style negative 3 end style bold space bold x bold space bold minus begin bold style 8 end style bold right parenthesis bold space bold equals begin bold style negative 9 end style bold space bold x bold left parenthesis begin bold style 5 end style bold space bold x bold space bold minus begin bold style 5 end style bold right parenthesis end style

Format de la resposta (circumflex pel quadrat): a*x^2+b*x+c=0

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