原式=2(x+3)(x-3)/(x-2)²*(x+3)(x-2)/(3x+9-1)
=2(x+3)(x-3)/(x-2)*(x+3)/(3x+8)
=2(x+3)²(x-3)/(x-2)(3x+8)
=2*49/4*(-5/2)/(-3/2)*(19/2)
=-245/57
原式=2(x+3)(x-3)/(x-2)²*(x+3)(x-2)/(3x+9-1)
=2(x+3)(x-3)/(x-2)*(x+3)/(3x+8)
=2(x+3)²(x-3)/(x-2)(3x+8)
=2*49/4*(-5/2)/(-3/2)*(19/2)
=-245/57