👉 "Nonzero" in mathematics refers to a number that has a value. This is also known as a real number or a rational number, depending on context.
For example, 1/2 and -3 are both non-zero numbers because they have a positive value.
In algebra, the term "nonzero" means that a variable or expression can be multiplied by a nonzero (positive) number to produce a result that is not zero, such as 5
0 = 0