Question

Find the value to three places of decimals .It is given that root2=1.414,root3=1.732,root10=3.162 and root5=2.236.Then find root10-root5/root2?

Answer 1

In second step multiply both numerator and denominator by root2
root2×root0=root(2×10)
=root(20)=root(4×5)
and that is=root4×root5=2root5
thats how root20 become 2root5