if  $${5x-{5\over x}+6=0}$$, then $$x^2+{1\over x^2}$$ is

if $$a+{1\over a}=5$$, then what is the value of $$a^3+{1\over a^3}$$

If a = 34, b = c = 33, then the value of a³ + b³ + c³ – 3abc is

Find the radius of the circle x²+y²-4x+6y=12

If α, β are the roots of 6x²+13x+7=0, then the equation whose roots are α², β² is:

If x² + y² + z² = 2 (x + z – 1), then the value of : x³ + y³ + z³ = ?