If x+y+z=22 and xy+yz+zx=35, then what  is the value of (x-y)² +(y-z)²+(z-x)²?

lf p + m = 6 and p³ + m³ = 72, then the value of pm is: 

If  $${3-5x\over 2x}+{3-5y\over 2y}+{3-5z\over 2z}=0$$ then the value of  $${2\over x}+{2\over y}+{2\over z}$$ is:

x = y = 333 and z = 334, then value of x³ + y³ + z³ – 3xyz is 

If $$ {t^{2}-4t+1=0}$$ then what is the value of $${t^{3}+{1\over {t^{3}}}}$$ ?

if a³b = abc = 180, a, b, c are positive integers, then the value of c is 

If a²=b+c, b²=c+a  and c²=a+b then the  value of $$ {1\over{1+a}}+{1\over{1+b}}+{1\over{1+c}}$$ is

If $${x}^2+{y}^2x+1=0$$ then the value of $$x^{31}+y{35}$$ is