A tithe barn was a type of barn used in the Middle Ages for storing the tithes - a tenth of the farm's produce which had to be given freely to the church.
There are many surviving examples of medieval tithe barns in England:
There are still many examples of tithe barns around England.
... the x-axis in two points.)
If the discriminant is negative, then there are two different solutions x, both of which are complex numbers. The two solutions are ...