Bantu dong sis & bro

1) x² -3x + 2 = 0 (Faktorkan)
(x-2) (x-1)

x-2 = 0 atau x-1 = 0
x1 = 2          x2 = 1

2) 2x²-3x-5 = 0 (Faktorkan)
@ (2x-5) (x-1)

2x-5 = 0 atau x-1 = 0
2x = 5            x2 = 1
x1 = 5/2 

3) 2x² -13x-7 = 0 (Faktorkan)
@ (x-7) (2x +1)

x-7 = 0 atau 2x+1 = 0
x1 = 7          2x = -1
                    x2 = -1/2 

Semoga membantu... ^_^