If $$p×q=p+q+{p\over q}$$, the value of 8 × 2  is : 

If p³ – q³ = (p-q)[(p-q)²+xpq)] then the value of x is

If $$64^{x+1}={64\over 4^x}$$, then the value of x

If a, b are rational number and (a-1)√2+3=b√2+a, the value of (a+b) is : 

If a = 7, b = 5 and c = 3, then the value of $$a^2+b^2+c^2-ab-bc-ca$$ is 

If x = a - b, y = b - c, z = c - a, then the numerical value of the algebraic expression x³ +y³ + z³ -3xyz will be 

If a^2x+2=1, where a is a positive real number other than 1, then x is equal to 

$$ {x^{8}+4\over{x^{4}+2x^{2}+2}}$$ is equal to