代数式的含义：什么是代数式？

代数式：由数和表示数的字母经有限次加、减、乘、除、乘方和开方等代数运算所得的式子，或含有字母的数学表达式也称为代数式。单个数字或数字连接的整式也是代数式。

例如：ax+2b，－2/3，b²/26，√a+√2等。

1、不包括不等号（≠、≤、≥、<、>、≮、≯）、约等号≈。

2、可以有绝对值。例如：|x|，|-2.25| 等。

推荐阅读：
Prefix Sum Algorithm to Count Number of Nice Subarrays　 How to Append Another List to a Existing List in Python? (Differ　 Linear Algorithm to Check If All 1’s Are at Least Length K　 Finding the Root of a Tree (Finding the Common Destination)　 Does WIFI Extender Boost Wireless Signal? How to Fix Slow WIFI?　 Bruteforce with Memoization to Count the Square Digit Chains　 How to Merge Two List/Iterators in Java?　 How to Design a First Unique Number Class with O(1)?　 Get Help With SQL Database Design and Development For Your Busin　 Compute the Minimum Value to Get Positive Step by Step Sum using