Math Problem Statement
Quel volume d’eau doit-on ajouter à 50mL de NaCl pour que sa concentration soit divisée par 9 ? Exercice 18 • Résoudre les 3 polynômes de degré 2 suivants : 5 −4=0 6 −9+1 =0 2 −22=0
Solution
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Math Problem Analysis
Mathematical Concepts
Dilution in Chemistry
Algebra
Quadratic Equations
Formulas
Dilution formula: C1V1 = C2V2
Quadratic equation formula: ax² + bx + c = 0
Discriminant formula: Δ = b² - 4ac
Theorems
Quadratic Formula: x = (-b ± √Δ) / 2a
Suitable Grade Level
Grades 9-12
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