х2+5х-6=0 - х1 = -6, х2 = 1, х2+8х+12=0 - х1 = -2, х2 = -6, х2-4х-12=0 - х1 = -2, х2 = 6, х2-12х+20=0 - х1 = 2, х2 = 10, х2+7х-8=0 - х1 = -8, х2 = 1,

Leaderboard

Visual style

Options

Switch template

Continue editing: ?