tolong bantuan ya guys.... x(x+3)-9(x-1)-1 dapat difaktorkan menjadi...

Pemfaktoran

= x(x + 3) - 9(x - 1) - 1
= x² + 3x - 9x + 9 - 1
= x² - 6x + 8

a = 1
b = -6
c = 8

b = -6 → -2 - 4
ac = 8 → -2 × -4

= x² - 6x + 8
= (x - 2)(x - 4) ← jawaban

semoga berguna +_+