Variable (mathematics)

In elementary mathematics, a variable is an alphabetic character representin a nummer which is either arbitrary or nae fully specified or unkent. Makin algebraic computations wi variables as if thay wur explicit nummers allaes ane tae solve a range o problems in a single computation. A typical example is the quadratic formula, which allaes tae solve every quadratic equation bi simply substitutin the numeric values o the coefficients o the given equation tae the variables that represent them.