1. What are the values of a, b, c in 2
2 − 5 + 3 = 0
2. Find the value of
2 − 4 for the equation 2
2 − 3 + 1 =0
3. Say true or false: 4
3 −
2 − 1 = 0 is a quadratic equation.
4. Check whether i = 5, = 2 is a solution of a linear equation − 2 = 1
5. Write a quadratic formula to find the solution of a quadratic equation.
6. Say true or false: If
2 − 4 < 0 then a quadratic equation has two distinct real roots.
7. Multiply given equation 4 + 6 = 7 − 3
8. Find the value of 5 + 3 = 35
9. What is the nature of roots of a quadratic equation 6
2 − − 2 = 0
10. Find √3 − √2 = 0
SECTION-B
(Question number 11 to 13 carry 2 marks each)
11. The cost of 5 oranges and 3 apples is Rs. 35 and the cost of 2 oranges and 4 apples is Rs. 28. Write
the pair of linear equations in two variables.
12. Check whether ( + 1)
2 = 2( − 3) is a quadratic equation.
13. Find ( − 4)
2 = 4
SECTION-C
(Question number 14 to 17 carry 3 marks each)
14. Solve: + = 14, − = 4
15. Find the solutions of
2 − 3 − 10 = 0 by factorization method.
16. Find the solutions of 2
2 − 7 + 3 = 0 by using the method of completing the square.
17. Find the roots of the quadratic equation 2
2 + − 4 = 0 by using quadratic formula.
SECTION-D
(Question number 18 to 20 carry 4 marks each)
18. Five years hence, the age of Jacob will be three times that of his son. Five years ago, Jacob’s age was
seven times that of his son. What are their present ages?
19. Solve: 2
√
+
3
√
= 2,
4
√
−
9
√
= −1
20. Find the nature of roots of quadratic equations ) 2
2 − 6 + 3 = 0
) 3
2 − 4√3 + 4 = 0
please somebody help
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Answer:
I dont no...
sorry..
please mark me as brainliest.....
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