30
x=6, y=5, xy=30
If x + y = 7 & x^3 + y^3 = 133 Then xy=??
Where x,y both are real numbers.
If x, y, z are 3 non zero positive integers such that x+y+z = 8 and xy+yz+zx = 20, then What would be minimum possible value of x*y^2*z^2
