4 pangkat x kuadrat kurang 4 x kurang 5 = 1 By Admin ReiPosted on December 5, 2022 4 pangkat x kuadrat kurang 4 x kurang 5 = 1 x² – 4x – 5 = 0(x – 5)(x + 1) = 0 x = 5x = -1 HP = { 5, – 1}