Math Problem Statement

resoudre sur R (x-1)/(x+1)<2/(x-1)

Solution

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Math Problem Analysis

Mathematical Concepts

Inequalities
Rational Expressions
Quadratic Equations

Formulas

Rational inequality: (a/b) < (c/d)
Quadratic equation: ax^2 + bx + c = 0
Discriminant formula: Δ = b^2 - 4ac

Theorems

Properties of rational expressions
Quadratic discriminant

Suitable Grade Level

Grade 10-12