计算:
(1)a2·a3·a;
(2)a4·(-a)5.
若an-3·a2n+1=a10 ,则n= ________________.
计算:m·m2·m9= ________________.
若xm=2,xn=-,则xm+n的值为________________.
a2·a5= ________________.
-32×33= ________________.