Developper et reduire : (x-1)(x-2)-x au carré

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Grade: Education Subject: mathematiques
Developper et reduire : (x-1)(x-2)-x au carré
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Bonjour ; (x-1) (x-2) - x^ = x^ - 2x - x + 2 - x^ = -3x + 2 . ** " ^ " ça veut dire au carré .