化简:2a^-3b^2*3a^-2b/4a^-4*b^-3
2a^(-3)b^2*3a^(-2)b/[4a^(-4)*b^(-3)]
=[6*a^(-3-2)*b^(2+1)]/[4a^(-4)*b^(-3)]
=[6*a^(-5)*b^3]/[4a^(-4)*b^(-3)]
=(3/2)*a^(-5+4)*b^(3+3)
=(3/2)*a^(-1)*b^6
=(3b^6)/(2a)。
[2a^(-3)b^2*3a^(-2)b]/[4a^(-4)*b^(-3)] =(1/2)a^(-3-2+4)b^(2+1+3) =(1/2)a^(-1)b^6 =(1/2)b^6/a