If `x+1/x=4 and x^2 +1/x^2=10` the value of `x-1/x` is

If x-1/x=2, then the value of x^4+1/x^4 is :

If (x-1/x)=4 then the value of (x^2+1/x^2) is

if x+(1)/(x)=5 the value of (x^(4)+1)/(x^(2)) is

If (x - 1/x) = 4 , find the value of (i) (x^(2) - 1/(x^(2))) , (ii) (x^(4) + 1/(x^(4))).

If x_1 and x_2 are the solutions of the equation x^(log_(10)x)=100x such that x_1gt1 and x_2lt1 , the value of (x_1x_2)/2 is

If x_1 and x_2 are the solutions of the equation x^(log_(10)x)=100x such that x_1gt1 and x_2lt1 , the value of (x_1x_2)/2 is

If x_1 and x_2 are the solutions of the equation x^(log_(10)x)=100x such that x_1gt1 and x_2lt1 , the value of (x_1x_2)/2 is