Surds are square roots which can’t be reduced to rational numbers. Some can be simplified using various rules or by rationalising the denominator. Revise working with surds with this National 5 Maths ...

Rationalise the denominator of \(\frac{\sqrt{8}}{\sqrt{6}}\). The denominator can be rationalised by multiplying the numerator and denominator by √6. (This has the same effect as multiplying it by 1, ...