difference between expression equation and inequality

difference between expression equation and inequality.

Look at the figure carefully, especially the X and Y axis labels.

Expression:-     x²-5 x+6

Expression

In expression x axis- real number
Y axis- imaginary number

Equation:-     x²-5 x+6=0

Equation

In equation -    x²-5 x+6=0
                           (x-2)(x-3)=0
                          x=2,x=3
Represent two lines which cuts x axis at 2 points.

Inequality:-      x²-5 x+6>0

                            x²-5 x+6<0

Inequality x²-5 x+6<0

x²-5 x+6<0 show for all value of x (in a domain between 2and3) this inequality qives neq.value.