Question 32935
3*(sqrt(13/3)
rationalise my mutlipling with sqrt(3)on both the numerator and denominator which gives us

3 *sqrt(3) *sqrt(13)/3
sqrt(3) * sqrt (13)
Sqrt(13*3)
sqrt(39)

Sqrt(2) +sqrt(2/49)
sqrt(2)+sqrt(2)/7
{7sqrt(2)+sqrt(2)}/7
sqrt(2)(7+1)/7
8sqrt(2)/7