For any value of x the expression `2(k-x)(x+sqrt(x^2+k^2))` cannot exceed

For what values of k, the equation x^2+2(k-4) x + 2k=0 has equal roots?

For what value of k, the function f(x) ={:{((x^2-4)/(x-2)", " x ne 2),(" "k", " x=2):}, is continuous at x =2.

The vlue of k, for which the expression x^(3)+4x^(2)+5x-k is divisible by x-2 is

If the function f(x)=(sqrt(x^(2)+kx+1))/(x^(2)-k) is continuous for every x in R , then possible integral values of k

For what value of k the HCF of x^(2) + x + (5k -1) and x^(2) - 6x + (3k + 11) "is " (x -2) ?

Find the value of k, such that the function f(x) = {(k(x^2-2x), if x = 0):} at x=0 is continuous.