mohon bantuannya ^^ 2x²- x - 3= 0 x²- 5x + 6= 0 x² - 3x - 28=0 2x² + 7x - 4=0

2x²-x-3 = 0
(2x-3)(x+1) = 0
x = 3/2 atau x = -1

x²-5x+6 = 0
(x-3)(x-2) = 0
x=3 atau x=2

x²-3x-28 = 0
(x-7)(x+4) = 0
x = 7 atau x = -4

2x²+7x-4 = 0
(2x-1)(x+4) = 0
x = ½ atau x = -4