Rationalisation (mathematics)
In elementary algebra, root rationalisation is a process by which surds in the denominator of an irrational fraction are eliminated.
These surds may be monomials or binomials involving square roots, in simple examples. There are wide extensions to the technique.
Read more about Rationalisation (mathematics): Rationalisation of A Monomial Square Root and Cube Root, Dealing With More Square Roots, Generalisations, See Also