负根号负a加根号负的a的立方减a根号负a分之1

问题描述:

负根号负a加根号负的a的立方减a根号负a分之1

﹣√﹙﹣a﹚+√﹙﹣a﹚³-a√﹙﹣1/a﹚
=﹣√﹙﹣a﹚-a√﹙﹣a﹚+√﹙﹣a﹚
=﹣a√﹙﹣a﹚.