Question 687413
{{{-28x^2=4x}}}


{{{-28x^2-4x = 0}}}


{{{-4x(7x + 1) = 0}}}


{{{-4x = 0}}} or {{{7x + 1 = 0}}}


{{{-4x = 0}}} or {{{7x = -1}}}


{{{x = 0/(-4)}}} or {{{x = -1/7}}}


{{{x = 0}}} or {{{x = -1/7}}}


So the two solutions are {{{x = 0}}} or {{{x = -1/7}}}