Math Problem Statement
•(〖n-1)〗^2- ((n-2)(n-1))/2 =(n-1)n/2 explain how answer came out and also factor out common factor
Solution
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Math Problem Analysis
Mathematical Concepts
Algebra
Polynomial Expansion
Simplification of Expressions
Formulas
(a-b)^2 = a^2 - 2ab + b^2
Multiplying binomials
Factoring out common terms
Theorems
Binomial Expansion Theorem
Distributive Property
Suitable Grade Level
Grades 9-12
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