x^+4X-12 DIBAGI 2X^+9X-18

x² + 4x - 12 ==> (x - 2 ) (x + 6 )   
2x² + 9x -18 ==> ( 2x -3 ) ( x + 6 )

hasil bagi = x - 2 / 2x - 3

[tex] \frac{x^2-2x+6x-12}{2x^2+12x-3x-18} = \frac{x(x-2)+6(x-2)}{2x(x+6)-3(x+6)} = \frac{(x+6)(x-2)}{(x+6)(2x-3)} = \frac{x-2}{2x-3} [/tex]