Question 1020800
{{{ x*( x-2 ) = 0 }}}
There are 2 things you can do to the 
left side to make it zero.
You can make {{{ x = 0 }}}. Then you have:
{{{ 0*( 0 - 2 ) = 0 }}}
{{{ 0*(-2) = 0 }}}
{{{ 0 = 0 }}}
-----------
The other thing you can do is:
Make {{{ x = 2 }}}. Then you have:
{{{ 2*( 2 - 2 ) = 0 }}}
{{{ 2*0 = 0 }}}
{{{ 0 = 0 }}}
------------
So, 
{{{ x = 0 }}}
{{{ x = 2 }}}
are the solutions
----------------
{{{ x*( x-2 ) = 0 }}}
{{{ x^2 - 2x = 0 }}}
This is for finding roots
Here is the equation:
{{{ y = x^2 - 2x }}}
{{{ graph( 400, 400, -6, 6, -2, 6, x^2 - 2x ) }}} 
You can see the roots at ( 0,0 ) and ( 2,0 )