1. Find the value of ׳+1/׳ if ×+1/×=5

2. If ײ+1/×= 1 Find the value of ×³+1/׳

3. If £ 15 =$ 20 and $5= Rs.390. Find the number of pounds that can be exchanged for Rs.31200.

4. Factors of x²-y²+2y-1 are

5. If the area of equilateral triangle is 16√3 cm square on, find its perimeter.

6. In how many years the population of any town A will be double if the annual population growth rate is 2%?

7. Factorize a⁴-b⁴

8. A machine of 12,000 is depreciate at 10% per annum. Find the value of machine after one year.

9. The present population of a town is 30,000. What was the population of the town before 2 years ago if the annual growth rate 3%?

10. Expand: (x-1/x)³

11. Find the area of the annulus having the inner radius 7cm and outer radius 14cm.

12. What length of carpet of width 1.5m will be required to cover the floor a room of length 6m and breadth 4m?

13. Factorize of x³-x²-x+1 are

14. Find the value of √× + 1/√× if ×+1/×=2

15. What is the formula of cell charge?

16. If Sin2A=Cos4A find value of A.