Question 73478
{{{ (3x-6)(x+8)=0 }}}
You are looking for the values which will make this a true statement.  To do this, set each quantity equal to zero.
{{{ (3x-6)=0 }}} and {{{ (x+8)=0 }}}
{{{ 3x = 6 }}} and {{{ x = -8 }}}
{{{ x = 2 }}} and {{{ x = -8 }}}
These values are where the graph of the equation crosses the x-axis.