Question

Find rational numbers a and b such that √2-1\√2+1=a+b√2

Answer 1

3and -2...................

Answer 2

first rationalise L.H.S . by rationalising you get root 2 -1 whole square .then you solve root 2 -1 whole square you get 3+2 root 2. then compare a + b root 2 with 3+2 root 2
so a&b are 3&2 respectively