Quadratic Equation

2. an unknown term
3. discriminant is more than 0 when
6. term for non variable
13. U-shaped plane curve
14. The sum of the roots of the quadratic equation 3×2 – 9x + 5 = 0 is
15. known as the "x" coordinate of a point, shown on the horizontal line,
16. is the second element in an ordered pair
18. how many terms are there in quadratic equation
20. a polynomial with only 2 terms
22. the expression b2−4ac is called the
23. in a flight of 600 Km, an aircraft was slowed down due to bad weather. Its average speed for trip was reduced by 200 Km/h and the time increased by 30 minutes. Find the duration of flight.
24. cubic equation has degree

1. A two digit number is such that the product of the digits is 18. When 63 is subtracted to the number, then the digits interchange their places. Find the number.
4. Zero are also called
5. If one root of the quadratic equation 2x² + kx – 6 = 0 is 2, the value of k is
7. discriminant is less than 0 when
8. A polynomial with three unlike terms
9. bi-quadratic equation has degree
10. polynomial, which has only one term
11. The sum S of first n natural numbers is given by S=n(n + 1)/n . Find n, if the sum is 351.
12. a polynomial of degree 2
17. Square root of a negative number
19. A shopkeeper buys a number of books for Rs 80. If he had bought 4 more books for the same amount, each book would have cost him Re 1 less. How many books did he bought?
21. Find the value of k for which the roots of the quadratic equation (k -4)x2+2(k -4)x +2 = 0 are equal.