ÔN TOÁN

ÔN TOÁN

11th Grade

42 Qs

quiz-placeholder

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ÔN TOÁN

ÔN TOÁN

Assessment

Quiz

Mathematics

11th Grade

Practice Problem

Hard

Created by

Duy Nhựt

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42 questions

Show all answers

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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