1 
LCM of a<sup>2</sup>+b<sup>2</sup> and a<sup>4</sup>b<sup>4</sup> is: 
 A. a<sup>2</sup>+b<sup>2</sup>
 B. a<sup>2</sup>b<sup>2</sup>
 C. a<sup>4</sup>b<sup>4</sup>
 D. ab

2 
What should be added to complete the square of x<sup>4</sup>+64 _______ : 
 A. 8x<sup>2</sup>
 B. 8x<sup>2</sup>
 C. 16x<sup>2</sup>
 D. 4x<sup>2</sup>

3 
H.C.F of x<sup>2</sup>4 and 2x<sup>2</sup>+x6: 
 A. (x2)
 B. (x+2)
 C. (2x3)
 D. (x+2)(2x3)

4 
HCF of a<sup>2</sup>b<sup>2</sup> and a<sup>3</sup>b<sup>3</sup> is: 
 A. ab
 B. a+b
 C. a<sup>2</sup>=ab+b<sup>2</sup>
 D. a<sup>2</sup>ab+b<sup>2</sup>

5 
HCF of x2 and x+x6 is: 
 A. x<sup>2</sup>+x6
 B. x+3
 C. x2
 D. x+2

6 
LCM of 15x<sup>2</sup> , 45xy and 30xy is: 
 A. 90xyz
 B. 90x<sup>2</sup>yz
 C. 15xyz
 D. 15x<sup>2</sup>yz

7 
Simplify that: 

8 
HCF of x<sup>2</sup>+3x+2, x<sup>2</sup>+4x+3 and x<sup>2</sup>+5x+4 is: 
 A. x+1
 B. (x+1)(x+2)
 C. (x+3)
 D. (x+4)(x+1)

9 
If two are more algebraic expression are given then their common factors of highest power is called of the expressions: 
 A. LCM
 B. HCF
 C. Multiplication
 D. Square root

10 
Simplify this: 
