If `a=(sqrt(3)+sqrt(2))^(- 3) and b=(5-2sqrt(6))^(- 3/2)` then the value of `(a+1)^-1+(b+1)^-1` is

If a = (sqrt(5) + sqrt(4))^(-3) and b = (sqrt(5) - sqrt(4))^(-3) , then the value of: (a+1)^(-1) + (b+1)^(-1) is:

If a=(sqrt(3)+1)/(sqrt(3)-1) and b=(sqrt(3)-1)/(sqrt(3)+1) ,find the value of a^(2)+ab-b^(2)

If a=(1)/(3-2sqrt(2)),b=(1)/(3+2sqrt(2)) then the value of a^(2)+b^(2) is