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2nde Astuce pour factoriser un polynôme du second degré Details

2ndeAstucepourfactoriserunpolynmeduseconddegr
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2nde Astuce pour factoriser un polynôme du second degré

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Toute l’Astuce Détaillée dans cette vidéo : Résumé de l'Astuce dans cette vidéo : Dans cet exercice de maths gratuit en vidéo, je te montre une astuce permettant de factoriser un polynôme du second degré (je te rappelle aussi ce que c'est). Factorisation d'un polynôme du second degré Cette astuce ne marche pas toujours ! Tout simplement car tout polynôme du second degré (trinôme en fait) n'est pas factorisable ! Identité remarquable Si tu comprends cette astuce, utilisant une identité remarquable, c'est vraiment super car elle est d'un niveau assez avancé. L'idée de l'astuce : Transformer les 2 premiers termes de ton trinôme (celui en "x au carré" et celui de puissance 1) en "(x+constante)² - constante²". Puis, si ton polynôme est de la forme "ax²+bx+c", alors il devient "(x+constante)² - constante² + c"... Différence de deux carrés Cette identité remarquable, la différence de deux carrés, te permet de factoriser une différence de carrés. Donc si "c - constante²" est un nombre positif, alors c'est gagné, tu pourras factoriser ton polynôme. Pas si facile, n'est-ce pas ;) ? Romain
Channel: iTunes
Video Length: 0s
Date Found: Sun, Jul 10 2011 3:50 AM
Category: Educational
Date Produced: Fri, Jul 08 2011 12:00 AM
View Count: 0
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