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Bab Persamaan Kuadrat
Matematika SMP Kelas VIII

(2x² - x - 10)/(x² - x - 6)
= (2x² + 4x - 5x - 10) / (x² - 3x + 2x - 6)
= (2x (x + 2) - 5 (x + 2)) / (x (x - 3) + 2 (x - 3))
= ((2x - 5) (x + 2)) / ((x + 2) (x - 3))
= (2x - 5)/(x - 3)

2x^2-x-10/x^2-x-6
=2x^2-5x+4x-10/(x-3) (x+2)
=(2x^2+4x) (-5x-10)/(x-3) (x+2)
= 2x(x+2) -5(x+2)/(x-3) (x+2)
=(2x-5) (x+2) / (x-3) (x+2)
=(x+2) mati karena dibagi sisa
= (2x-5) / (x-3)
= pembilang 2x-5 = 0, x =5/2
Pemyebut x-3=0 , x= 3