Varieties, the central object of study in algebraic geometry, are defined to be the set of solutions to a system of these objects.
Most computer programs use Homer's rule to evaluate expressions of this form. Varieties, the central object of study in algebraic geometry, are defined to be the set of solutions to a system of these objects. One type of these named after Vaughan Jones and another named after James Alexander and John Conway are used to represent knots.  Descartes' rule of signs is a method for determining the number of roots for one these, and these can be differentiated using the power and sum rules. Niels Abel (AH-bul) proved that formulas do not exist to find roots for these when they are at least fifth degree after Lodovico Ferrari and Gerolamo Cardano found a formula for the quartic type. Give the name for these expressions, examples of which are 3 xy and x+2 y.
Most computer programs use Homer's rule to evaluate expressions of this form.
polynomials [or polynomial expressions; accept polynomial equations]