挑战习题
1
/5
单选题
难度:
1.2
10
可写成( )
A
2
2
×2
5
B
5
2
+5
5
C
(2
5
)
10
D
(2
5
)
2
提示1:
5bmC55qE5LmY5pa577yM5bqV5pWw5LiN5Y+Y77yM5oyH5pWw55u45LmYPGltZyB3aWR0aD05NCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC83My8xOC9yQkFDRTFUSWtlU1M2WkIxQUFBQ1JyaXl0X00wNjcucG5nIj4=
正确答案:
RA==
6Kej562U77ya4oi1PGltZyB3aWR0aD04MCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8zRS9BNC9yQkFDSmxUSWtlZUFyU2J6QUFBQ0xrVFFTOFk5NzMucG5nIj48YnI+MjxzdXA+MTA8L3N1cD7lj6/lhpnmiJA8aW1nIHdpZHRoPTMyIGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwL0FBLzFEL3JCQUNGRlRJa2VlQkhhM2xBQUFCa1VWeXBDZzYzNC5wbmciPjxicj7mlYXpgIlE
2
/5
单选题
难度:
2.计算(2x
3
y)
2
的结果是( )
A
4x
6
y
2
B
2x
6
y
12
C
4x
5
y
2
D
8x
5
y
2
提示1:
56ev55qE5LmY5pa5562J5LqO56ev55qE5q+P5LiA6aG55YiG5Yir5LmY5pa5PGltZyB3aWR0aD0zMyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8zRS9FMy9yQkFDSjFUSWtlMmlMUFNOQUFBQnVlOVMzXzA1NzIucG5nIj49PGltZyB3aWR0aD0zMSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC83My8xOC9yQkFDRTFUSWtlMkJkeTFIQUFBQm9qdkNfM005MzYucG5nIj4=
正确答案:
QQ==
6Kej562U77ya4oi1PGltZyB3aWR0aD00OCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8zRS9FMy9yQkFDSjFUSWtlM2lzZ3ppQUFBQ0E4NS1RWDA3MjcucG5nIj49IDR4PHN1cD42PC9zdXA+eTxzdXA+Mjwvc3VwPjxicj7mlYXpgIlB
3
/5
单选题
难度:
3.计算(-a
2
)
5
+(-a
5
)
2
的结果是( )
A
0
B
2a
10
C
-2a
10
D
2a
7
提示1:
5bmC55qE5LmY5pa577yM5bqV5pWw5LiN5Y+Y77yM5oyH5pWw55u45LmY
提示2:
5bmC55qE5LmY5pa577yM5bqV5pWw5LiN5Y+Y77yM5oyH5pWw55u45LmYPGltZyB3aWR0aD05NCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC83My8xOC9yQkFDRTFUSWtlU1M2WkIxQUFBQ1JyaXl0X00wNjcucG5nIj4=
正确答案:
QQ==
6Kej562U77ya4oi1KC1hPHN1cD4yPC9zdXA+KTxzdXA+NTwvc3VwPis8aW1nIHdpZHRoPTQzIGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzNFL0E0L3JCQUNKbFRJa2VTai1KSjlBQUFCdGpPWC1sRTc0MC5wbmciPj08aW1nIHdpZHRoPTkzIGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzNFL0UzL3JCQUNKMVRJa2VUZzZtcW1BQUFCMExiQVl1TTY0MS5wbmciPjxicj7mlYXpgIlB
4
/5
单选题
难度:
4.如果(a
3
b
4
)
n
=a
6
b
m
成立,那么m,n的值分别为()
A
m=8,n=2
B
m=4,n=2
C
m=6,n=2
D
m=8,n=1
提示1:
56ev55qE5LmY5pa5562J5LqO56ev55qE5q+P5LiA6aG55YiG5Yir5LmY5pa5PGltZyB3aWR0aD0zMyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8zRS9FMy9yQkFDSjFUSWtlMmlMUFNOQUFBQnVlOVMzXzA1NzIucG5nIj49PGltZyB3aWR0aD0zMSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC83My8xOC9yQkFDRTFUSWtlMkJkeTFIQUFBQm9qdkNfM005MzYucG5nIj4=
正确答案:
QQ==
6Kej562U77ya4oi1KGE8c3VwPjM8L3N1cD5iPHN1cD40PC9zdXA+KTxzdXA+bjwvc3VwPj08aW1nIHdpZHRoPTkzIGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzNFL0E0L3JCQUNKbFRJa2ZEaVN6OG1BQUFDYW9GQS1XRTU4NS5wbmciPjxicj7iiLQzbj02LG09NG48YnI+4oi0bj0yLG09ODxicj7mlYXpgIlB
5
/5
单选题
难度:
5.下列式子中与a
3m+1
一定相等的是( )
A
(a
m+1
)
3
B
(a
3
)
m+1
C
a·(a
3
)
m
D
a·a
2
·a
m
提示1:
5bmC55qE5LmY5pa577yM5bqV5pWw5LiN5Y+Y77yM5oyH5pWw55u45LmY
提示2:
5ZCM5bqV5bmC55u45LmY77yM5bqV5pWw5LiN5Y+Y77yM5oyH5pWw55u45Yqg
正确答案:
Qw==
6Kej562U77ya4oi1PGltZyB3aWR0aD0xNzYgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvRTMvckJBQ0oxVElrZXJ5X0JqWEFBQUN3X3N6X2RrNjcxLnBuZyI+PGJyPuaVhemAiUM=