(1)x2?x5=______.??????????????????
(2)(y3)4=______.
(3)(2a2b)3=______.????????????????
(4)(-x5y2)4=______.
(5)a9÷a3=______.?????????????????
(6)10×5-2×40=______.
网友回答
解:(1)x2?x5=x2+5=x7;??????????????????
(2)(y3)4=y12;
(3)(2a2b)3=8a6b3;????????????????
(4)(-x5y2)4=x20y8;
(5)a9÷a3=a6;?????????????????
(6)10×5-2×40=10××1=.
故