函数包括：

• Simplify：化简
• FullSimplify：完全化简
• Collect：按指定的变量合并相同项
• Expand和Factor：将表达式展开或因式分解

延伸阅读

• Simplify: Expression Simplification (Expanding, Factoring, …)—Wolfram Documentation
• FullSimplify: Returns the simplest form of an expression—Wolfram Documentation
• Collect: Gather terms involving the same powers—Wolfram Documentation
• Expand: Get the expansion of an expression—Wolfram Documentation
• Factor: Get the factorization of a polynomial—Wolfram Documentation