
ÔN TOÁN
Authored by Duy Nhựt
Mathematics
11th Grade

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42 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1. Cho 0, ab > ;, . Phát biểu nào sau đây là đúng?
aaa +=.
( )abab =.
( )aa =.
a a a +=.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2. Cho a 0, m, n > . Khẳng định nào sau đây đúng?
mnm n aaa. +=
mnm n a .aa. − =
m n n m (a ) (a ) . =
m nm n a a. a − =
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3. Cho hai số dương a; b và m; n . Khi đó ta có
m mn n a a a − =.
m mn n a a a +=.
mn m n aa bb − =.
()m.n mn a .bab =
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 4. Với a0 > , b0 > , , là các số thực bất kì, đẳng thức nào sau đây sai?
a a a − =.
a .aa + =.
aa bb − =.
( ) a .b ab =.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 5. Cho x, y 0 > và , . Tìm đẳng thức sai dưới đây.
( ) xy x .y =.
( ) x y x y + = +.
( ) xx =.
x .xx + =.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 6. Tính: ( ) ( ) 1 1 2 43 0,25 1 0, 5 625 2 19. 3 4 − −− − + −
13
12
11
10
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 7. Giá trị của biểu thức ( ) 3 1 3 4 0 32 2 .2 5 .5 P 10 :10 0,1 −− −− + = − là
9−.
10−.
10.
9.
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