Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The solution of an equation is to determine the value of all its roots. There are two; kinds of solution; one is to find the value of the roots in terms of the coefficients, when represented by symbols, which is called an [algebraical solution: the other is to determine the numerical value of the roots, or their value in figures this is called a numerical solution.