Question

Faktor Dari x2 -12x + 28 .
Tolong Dong Please....
Buat Latihan Ulangan

Answer 1

X² - 12x + 28 = x² - 7x - 4x + 28
a×c =28 = (x² - 7x) (-4x + 28)
-7×-4 =28 = x(x - 7) -4(x - 7)
-7+(-4) =-12 = (x - 4)(x - 7)