If `a = 2+sqrt 3`, fins the value of `a + 1/a`

If x = 2 - sqrt 3 , find the value of (x-1/x)^3

if a=2 + sqrt3 , then find the value of (a-1/a) .

If a=2+sqrt3 then find the value of a^3+1/a^3

If x=1-sqrt(2) , find the value of (x-1/x)^3

If a=1-sqrt(2),"then find the value of "(a-(1)/(a))^(3)

If x = sqrt(3)- sqrt(2) find the value of x+(1)/(x)

If sin A=sqrt3/2 and cos B = sqrt3/2 , find the value of : (tanA-tanB)/(1+tanAtanB)

If x=1-sqrt(2), find the value of (x-1/x)^3

If x =1 -sqrt(2) find the value of (x-(1)/(x))^(3)

If sqrt(2)= 1.4 and sqrt(3) = 1.7 find the value of each of the correct to one decimal place: (2-sqrt(3))/(sqrt(3))