## Elementary Algebra

$x = 0, 5$
In order to solve this problem, we first factor, and then we set each factor equal to 0 to solve: $4x^{2} = 20x$ $4x^{2} - 20x = 0$ $4x(x - 5) = 0$ Set each factor equal to 0 to solve: $x = 0$ $x-5=0 \\\\ x=5$