若a3=-27x9y3z6,则a=______;若a2=4x2y4,则a=______.
已知10m=2,10n=3,则103m+2n=_________
若3x=27,2y=32,则2x+3y=______.
若(an) 3=-27,则an=__________.
若64 4×8 3=2 n,则n=__________.