3(6x +2) -(7x -3 ) X ( 7x -3)
Mathématiques
Samlebeau
Question
3(6x +2) -(7x -3 ) X ( 7x -3)
2 Réponse
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1. Réponse Anonyme
3(6x + 2) - (7x - 3) * (7x - 3)
= 18x + 6 - (49x² - 42x + 9)
= 18x + 6 - 49x² + 42x - 9
= - 49x² + 60x - 3 -
2. Réponse maudmarine
3 (6x + 2) - (7x - 3) * (7x - 3)
= 18x + 6 - (49x² - 21x - 21x² + 9)
= 18x + 6 - 49x² + 42x - 9
= - 49x² + 18x + 42x + 6 - 9
= - 49x² + 60x - 3