sederhanakanlah x-3/x-2 × x²-x-2/x²+x-12=…

= x-3/x-2 × x'2 +x-2x-2 per x'2 + 4x-3x-12
= x-3/x-2 × x(x+1)-2(x+1) per x(x+4)-3(x+4)
= x-3/x-2 × (x-2)(x+1) per (x-3)(x+4)
= x+1/x+4

salah maaff....