Math Problem Statement
(〖n-1)〗^2- ((n-2)(n-1))/2
Solution
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Math Problem Analysis
Mathematical Concepts
Algebra
Simplification of Expressions
Factoring
Formulas
(n-1)^2 = n^2 - 2n + 1
(n-2)(n-1) = n^2 - 3n + 2
Final Expression: \frac{n(n-1)}{2}
Theorems
Distributive Property
Combining Like Terms
Suitable Grade Level
Grades 9-11