Math Problem Statement
Las notas de Eliza son raíces positivas de x² - 15x -16 = 0 y x² - 2x - 168 = 0. ¿Cual es el promedio de sus notas?
Solution
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Math Problem Analysis
Mathematical Concepts
Algebra
Quadratic Equations
Averages
Formulas
Quadratic equation formula: x = (-b ± √(b² - 4ac)) / 2a
Average formula: (sum of values) / (number of values)
Theorems
Quadratic formula
Suitable Grade Level
Grades 8-10