Math Problem Statement
a,b,c trois réel tel que a²+b²+c²=2. Montrez que a+b+c - abc≤2
Solution
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Math Problem Analysis
Mathematical Concepts
Inequalities
Algebra
Quadratic Expressions
Formulas
a² + b² + c² = 2
a + b + c - abc ≤ 2
Theorems
Cauchy-Schwarz inequality
AM-GM inequality
Suitable Grade Level
Grades 10-12