![]() The plus or minus symbol (±) is a part of the set of ALT Codes for Math Symbols: Basic Operators, Relations & Symbols. In mathematical equations or scientific notation, the plus or minus symbol (±) provides a concise way to express uncertainty, variation, or alternative possibilities, allowing for more comprehensive and accurate representations of information. When using the plus or minus symbol, it’s important to ensure that its meaning is clear within the context of its usage, as it can represent both ranges of values and alternatives. In music notation, the symbol may be used to indicate that a note can be played either higher or lower by a small interval.In an equation, x ± 3 could represent two equations: x + 3 and x – 3.The plus or minus symbol can also be used to express positive and negative options or alternatives. In mathematics, the quadratic formula is often expressed as x = (-b ± √(b² – 4ac))/(2a), where the plus or minus symbol indicates that there are two possible solutions for x.If a measurement is given as 10 ± 2, it means the value can be either 10 plus 2 (12) or 10 minus 2 (8).The symbol is commonly used to represent a range or uncertainty in measurements, tolerances, or margins of error. It is placed before a value to indicate that the actual value may be either greater or smaller than the given value. The plus or minus symbol (±) consists of a plus sign (+) and a minus sign (-) connected together. It is used in mathematics, science, engineering, and other fields where the expression of uncertainty or alternatives is necessary. The plus or minus symbol (±) is a typographic symbol used to represent a range of values or to indicate that a number can be either positive or negative. Origin, Meaning and Usage of the Plus or Minus Sign Symbol ± Download Free ALT Codes PDF Reference Chart.
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