Math Problem Statement

можешь мне объяснить откуда взялись 1 и x^(n+1) в последней сумме?

Solution

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Math Problem Analysis

Mathematical Concepts

Algebra
Binomial Expansion

Formulas

(1 + x)^n = ∑ C(n, k) * x^k
(1 + x)^(n+1) = (1 + x) * ∑ C(n, k) * x^k

Theorems

Binomial Theorem

Suitable Grade Level

Grades 10-12