When you enter an equation into the calculator, the calculator will begin by expanding (simplifying) the problem. Then it will attempt to solve the equation by using one or more of the following: addition, subtraction, division, taking the square root of each side, factoring, and completing the square.
Serfdom is a legal and economic system. A serf is a worker who has to stay in one area. Serfs were the lowest social class of the feudal society. Serfs were different from slaves. Serfs could have property. In most serfdoms, serfs were legally part of the land, and if the land was sold, they were sold with it. Serfdom is the forced labour of serfs, on the fields of the land owners. Serfs got protection and the right to work on the leased fields. Serfs worked in fields, and other agricultural-related works, like forestry, transportation (both land and river-based), work in craft and even in manufacturing.
(1) Domestic slavery â usually called 'serfdom' â also existed in Britain: serfs were bought and sold with the estate on which they had to work for a fixed number of days a year without payment; they could only marry with their lord's consent, could not leave the estate and had few legal rights.