非负数有很多重要的性质,初中常见的非负数主要有三种,现总结如下:1.三种重要的非负数实数a的绝对值,记作|a|;实数a的平方,记作a~2;实数a的算术平方根,记作a~(1/2).2.非负数性质非负数的最小值为零;几个非负数的和为非负数;几个非负数的和为零,则每个非负数为零.具体形式:(1)若|a|+|b|=0,则a=0,b=0; Non-negative number has many important properties, junior high school common non-negative there are three main types are summarized as follows: 1. The three important non-negative real a absolute value, recorded as | a |; real a square, denoted as a ~ 2; The arithmetic mean square of the real number a is written as a ~ (1/2) .2. The minimum value of the nonnegative non-negative number is zero; the sum of a few nonnegative numbers is nonnegative; the sum of several nonnegative numbers is zero, Then each non-negative number is 0. Specific forms: (1) a = 0, b = 0 if | a | + | b | = 0;