Question
\( \begin{array}{lr}\text { Exercice } n^{\circ} 3 \text { : } & \text { Développer et réduire chaque expression: } \\ \begin{array}{lr}N=-3 \times(a+5) & P=(-4+b) \times(-6) \\ S=-5 \times(-1+d) & R=(c-8) \times(-7)\end{array}\end{array} \)
Ask by Campbell Evans. in France
Jan 23,2025
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Answer
Voici les expressions développées et réduites :
1. \( N = -3a - 15 \)
2. \( P = 24 - 6b \)
3. \( S = 5 - 5d \)
4. \( R = -7c + 56 \)
Solution
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Bonus Knowledge
Pour l'expression \( N = -3 \times (a + 5) \), on applique la distributivité : \( N = -3a - 15 \). Pour \( P = (-4 + b) \times (-6) \), en développant on obtient : \( P = 24 - 6b \). Pour \( S = -5 \times (-1 + d) \), le résultat est : \( S = 5 - 5d \). Enfin, pour \( R = (c - 8) \times (-7) \), on a : \( R = -7c + 56 \). Résumons : - \( N = -3a - 15 \) - \( P = 24 - 6b \) - \( S = 5 - 5d \) - \( R = -7c + 56 \)