Math Problem Statement

刚才的图中的数学题,用中学考试答题的方式回答。用中文答题。

Solution

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Math Problem Analysis

Mathematical Concepts

Inequalities
Quadratic Functions

Formulas

Quadratic function formula f(k) = k^2 + k + 1

Theorems

Inequality involving quadratic functions

Suitable Grade Level

Grades 10-12