If x=√11+√20, y=√15+√17 and z=√14+√18, then which of the following holds true?
x < z < y
If you square all the values and compare them and place them in ascending order the order of magnitudes of their squares will also be the same,
x2=11+20+2√220=31+2√220y2=15+17+2√255=32+2√255z2=14+18+2√252=32+2√252
From observation x < z < y.