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08.12.2020, adminQuestion 1 Which of the following is a quadratic equation? Thus, the equation is not a quadratic equation. Question 2 Which of the following is not a quadratic equation? Question 3 Which of the following equations has 2 as a root? Question 5 Which of the following equations has the sum of its roots as 3?
Question 9 Which of the following equations has two distinct real roots? Question 10 Which of the following equations has no real roots? Question 1 State whether the following quadratic equations ncert exemplar class 10 maths ch 10 map two distinct real roots. Justify your answer. Question 3 A quadratic equation with integral coefficient has integral roots.
Solution: No, consider the quadratic equation with integral coefficient i. Question 4 Does there exist a quadratic equation whose coefficients are rational but both of its ncert exemplar class 10 maths ch 10 map are irrational?
Solution: Yes, consider the quadratic equation with rational coefficient i. Question 5 Does there exist a quadratic equation whose coefficients are all distinct irrationals but both the roots are rationals?
Solution: Yes, consider the quadratic equation with all distinct irrationals coefficients i. The roots of this quadratic equation are 3 and 4, which are rationals.
Question 6 Is 0. Solution: No, because 0. Question 1 Ncert exemplar class 10 maths ch 10 map whether the following equations have real roots. If real roots exist, find. Question 2 Find a natural number whose square diminished by 84 is equal, to thrice of 8 more than the given number. Solution: Let n be the required natural number. Question 3 A natural number, when increased by 12, equals times its reciprocal.
Find the number. Solution: Let the natural number be x. Find the original speed of the train. Question 5 If Zeba were younger by 5 years than what she really is, then the square of her age in years would have been 11 more than five times her actual age.
What is her age now? Find the present ages of both Asha and Nisha. Question 7 In the centre of a rectangular lawn of dimensions 50 m x 40 m, a rectangular pond has to be constructed so that the area of the grass surrounding the pond would be m2 [see Figure]. Find the length and breadth of the pond. Solution: Given that a rectangular pond has to be constructed in the centre of a rectangular lawn of dimensions 50 m x 40 m so, the distance between pond and lawn would be same around the pond.
Find t. Exercise 4. RD Sharma Class 12 Solutions. Watch Youtube Videos.
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