Pouvez vous m’aider svp je comprend rien je suis en 4eme merciii d’avance.... Pergunta de ideia deMarinne19

Marinne19 @Marinne19

May 2019 1 61 Report

Pouvez vous m’aider svp je comprend rien je suis en 4eme merciii d’avance

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triozer Hello o/

a. Il te suffit de remplacer x par $A = - 5 \times {2}^{2} - 4 \times 2 + 5$

b. Ici, tu peux faire le calcul
$A = - 5 \times { (- 3)}^{2} - 4 \times (- 3) + 5$
Tu verras que Tom a raison.
Il faut trouver les sources d'erreurs : la plus commune est l'oubli des signes négatifs.
On en déduit que Laura a fait
$A = 5 \times { 3}^{2} + 4 \times 3 + 5$

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