Question

EXERCISE 2A
Find the zeros of the following quadratic polynomials and verify
between the zeros and the coefficients:
1. x2 + 3x - 10
2. x² – 2x – 8
3. x2 +7x +12
4. 2x² – x-6
5. 4x2 - 4x -3 [CBSE 2008C] 6. 5x2-4-8x
7. 2x2 - 11x +15
8. 213x2 -5x + 13
9. 4x² - 4x +1
10. 3x2 - x - 4
11. 5x? + 10x
12. 8x2 - 4

plzzz ans these ouestions gyes ​

Answer 1

Answer:

here is your answer. hope it will help.

Step-by-step explanation:

your seventh q is wrong it is - 2x2 - 13x -15.

sorry about q no. 8, 11 ,12.

q9

3x2 - x - 4.

3x2 -4x +3x -4.

x (3x-4) +1 (3x-4).

(3x-4) (x+1).

alpha = 4/3 and beta = -1.

alpha + beta = -b/a .

4/3 + -1 = 1/3 .

4-3/3 = 1/3 .

1/3 = 1/3.

alpha × beta = c/a

4/3 × -1 = -4/3

-4/3 = -4/3.