<PRE><B>Question 918390</B>
Simplify.


{{{(1/5)(25x^2-20x)=(1/5)0}}}


{{{5x^2-4x=0}}}


... and then factorize.
{{{x(5x-4)=0}}}


Zero Product Rule!
Either x is 0 or 5x-4 is 0.</PRE>