Math Problem Statement

第二步骤处理符号如何计算出来的,请帮我详细解答一下

Solution

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Math Problem Analysis

Mathematical Concepts

Algebra
Exponentiation
Negative Numbers

Formulas

Power of a negative number formula: (-1)^n = 1 if n is even, (-1)^n = -1 if n is odd

Theorems

Properties of exponents
Multiplication of negative numbers

Suitable Grade Level

High school