Solve the inequation x \(\ge\) 2 graphically.

Solve the quadratic equation 5^2x- 5^{x + 3}+ 125 = 5^x.

Solve \(\frac { x+1 }{ x-1 } >0\)

Simplify : \(\frac { 1 }{ 2+\sqrt { 3 } } +\frac { 3 }{ 4-\sqrt { 5 } } +\frac { 6 }{ 7-\sqrt { 8 } } \)

Solve: \(\frac { |x|-1 }{ |x|-3 } \ge 0,x\epsilon R,\quad x\neq \pm 3\)