考點(diǎn):整式的混合運(yùn)算,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪
專題:計(jì)算題
分析:(1)根據(jù)負(fù)整數(shù)指數(shù)冪的意義求解;
(2)根據(jù)冪的乘方法則計(jì)算;
(3)根據(jù)積的乘方和冪的乘方法則運(yùn)算;
(4)根據(jù)零指數(shù)冪的意義計(jì)算;
(5)根據(jù)同底數(shù)冪的除法法則運(yùn)算;
(6)根據(jù)同底數(shù)冪的乘法法則運(yùn)算;
(7)根據(jù)同底數(shù)冪的除法法則運(yùn)算;
(8)合并同類項(xiàng)即可.
解答:解:(1)2
-1=
;
(2)(x
3)
2=x
6;
(3)(mn
2)
2=m
2n
4;
(4)5
0=1;
(5)p
8÷p
2=p
6;
(6)2x
2y
5z•5xy=10x
3y
6z;
(7)7a
3b÷2a=
a
2b;
(8)2a
2+a
2=3a
2.
故答案為:(1)
;
(2)x
6;
(3)m
2n
4;
(4)1;
(5)p
6;
(6)10x
3y
6z;
(7)
a
2b;
(8)3a
2.
點(diǎn)評(píng):本題考查了整式的混合運(yùn)算:有乘方、乘除的混合運(yùn)算中,要按照先乘方后乘除的順序運(yùn)算,其運(yùn)算順序和有理數(shù)的混合運(yùn)算順序相似.也考查了零指數(shù)冪與負(fù)整數(shù)指數(shù)冪.