因为:2x-3为-2x^2+ax-12的因式,所以:可设-2x^2+ax-12=(2x-3)(-x+m)
即:-2x^2+ax-12=-2x^2+(2m+3)x-3m
所以:2m+3=a,-12=-3m,解得:m=4,a=11
-2x^2+11x-12=(2x-3)(-x+4)=-(2x-3)(x-4)
因为:2x-3为-2x^2+ax-12的因式,所以:可设-2x^2+ax-12=(2x-3)(-x+m)
即:-2x^2+ax-12=-2x^2+(2m+3)x-3m
所以:2m+3=a,-12=-3m,解得:m=4,a=11
-2x^2+11x-12=(2x-3)(-x+4)=-(2x-3)(x-4)