freeCodeCamp/guide/chinese/mathematics/negative-exponents/index.md

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---
title: Negative Exponents
localeTitle: 否定指数
---
## 否定指数
负指数只是将指数移动到分数条下方。让我们取_10_的力量。如果我们取_10³_我们得到_10 \* 10 \* 10 = 1000_ 。如果指数为负数比如_10 -3_ 则等于_1/10_ _3_ 或_1 /10 \* 10 \* 10_ 或仅为_1/1000_ 。 这适用于任何数字和任何权力。 _2³=_ _8,2至3 = 1 /2³= 1/8__5²= 25也是如此_ _5 -2 = 1 /5²= 1/25_