Perhatikan pemfaktoran berikut. (i) x² - 2x - 24 = (x+4)(x-6) (ii) 2x² - 5x + 3 = (2x-1)(x-3) (iii) 2x² + x - 10 = (2x+5)(x-2) (iv) 3x² - 2x - 1 = (3x-1)(x+1) P

[tex](i) \\ {x}^{2} - 2x - 24 = (x + 4)(x + 6) \\ {x}^{2} - 2x - 24 = {x}^{2} + 6x + 4x + 24 \\ {x}^{2} - 2x - 24 = {x}^{2} + 10x + 24 \\ (salah) \\ (ii) \\ {2x}^{2} - 5x + 3 = (2x - 1)(x - 3) \\ {2x}^{2} - 5x + 3 = {2x}^{2} - 6x - x + 3 \\ {2x}^{2} - 5x + 3 = {2x}^{2} - 7x + 3 \\ (salah) \\ (iii) \\ {2x}^{2} + x - 10 = (2x + 5)(x - 2) \\ {2x}^{2} + x - 10 = {2x}^{2} - 4x + 5x - 10 \\ {2x}^{2} + x - 10 = {2x}^{2} + x - 10 \\ (benar) \\ (iv) \\ {3x}^{2} - 2x - 1 = (3x - 1)(x + 1) \\ {3x}^{2} - 2x - 1 = {3x}^{2} + 3x - x - 1 \\ {3x}^{2} - 2x - 1 = {3x}^{2} - 2x - 1 \\ (benar)[/tex]
Jadi, yang benar adalah (iii) dan (iv)