untitled

5. What is the coefficient of x in the equation 3 x^2 x 5 0?
   a. 3 b. 2 c. 1 d.  1


6. Observe the following equations :

i. 2 x 3 9 2 1

2

.  
x
ii iii. 2 x 1 5

Which are of the above equations equivalent?
a.iandii b. iiandiii c. iandiii d. i,iiandiii

7. 
   

   Which one of the following is the solution set of the equatio n
   x^2 (ab)xab 0?
   a.{a,b} b. {a,b} c. {a,b} d. {a,b}

   
   


8. 
   

   The digit of the tens place of a numbe r consisting of two digits is twice the
   digit of the units place. In respect of the information, answer the following
   questions :
   (1) If the digit of the units place is x, what is the number?
   a. 2 x b. 3 x c. 12 x d. 21 x
   (2) If the places of the digits are interchanged, what will be the number?
   a. 3 x b. 4 x c. 12 x d. 21 x
   (3) If x 2 , what will be the difference between the original number and the
   number by interchanging their places?
   a. 18 b. 20 c. 34 d. 36
   Solve (9−18) :

   
   


9. 
   

   (x 2 )(x 3 ) 0 10. ( 2 x 3 )( 3 x 2 ) 0 11. y(y 5 ) 6

   
   


10. 
    

    (y 5 )(y 5 ) 24 1 3. 2 (z^2  9 ) 9 z 0 1 4. 2
    5 1

    
    

4

2 1

3





z z

15. 10 4 5
    10 4

4

 



x

x

16. 1
    6

6 ( 2 )

2

2











x

x

x

x

1 7.

x

b

b

x

x

a

a

x

 

18. a

b

b

a

x a

x b

x b

x a













Find the solution set (19−25):

19. 2
    1

3 4





x x

2 0. 5

2 1

2 6

1

7











x

x

x

x

2 1.

x a b xab

 

1 1 1 1

22. c dx

cx d

a bx

ax b









2 3. 2

1



x

x 2 4. 2 x^2  4 ax 0