Question

If the value of under root 6 and under root 5 are2.449 and 2.236 then the value of 1/root 6 + root 5 will be

Answer 1

multply and divide with conjugate

1/root 6 + root 5 =(1/root 6 + root 5)(root 6 - root 5/root 6 - root 5)
(A+B)(A-B)=A^2-B^2

so
(root 6 - root 5)/(6-5)
2.449-2.236=0.213