if a=26 and b=22, then the value of   $${{a^3-b^3}\over {a^2-b^2}}-{3ab\over a+b}$$ is

if $$m+{1\over(m-2)}=4$$,then find the value of  $$ (m-2)^2+ \left({{1\over {m-2}}} \right)^2 \ $$

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

If x + y + 3 = 0 , then find the value of x³+y³-9xy+9.

If (x + 6y) = 8, and xy = 2, where x > O, what is the value of (x³+216y³)?

If x = z = 225 and y = 226 then the value of : x³ + y³ + z³ – 3xyz is

If x² + x = 5 then the value of   $${(x+3)^3}+{1\over (x+3)^3}$$ is

If m = – 4, n = – 2, then the value of m³ – 3m² + 3m + 3n + 3n² + n³ is