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Which of the following equations has the...

Which of the following equations has the sum of its roots as 3 ?

A

`2x^(2) - 3x + 6 = 0`

B

`-x^(2) + 3x - 3 = 0`

C

`sqrt2 x^(2) - (3)/(sqrt2) x + 1 = 0`

D

`3x^(2) - 3x + 3 = 0`

Text Solution

Verified by Experts

The correct Answer is:
B
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EDUCART PUBLICATION-QUADRATIC EQUATIONS -LONG ANSWER Type Questions [4 marks]
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  2. A train travels 360 km at a uniform speed. If the speed had been 5 ...

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  4. Find a natural number whose square diminshed by 84 is equal to thrice ...

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  5. A natural number when increased by 12, equals 160 times its reciprocal...

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  6. An aeroplane takes off 30 minutes later than the scheduled time and i...

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  7. Find the dimensions of a rectangular park whose perimeter is 60 m and ...

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  8. If Zeba were younger by 5 years than what she really is, then the squa...

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  9. At present Asha's age (in years) is 2 more than the square of her daug...

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  10. In a class test , the sum of Arun's marks in Hindi and English is 30 ....

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  11. A motor boat whose speed is 18 km/h m still water takes 1 hour more...

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  12. A train travels at a certain average speed for a distance of 63km and ...

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  13. The altitude of a right-angled triangle is 7 cm less than its base . I...

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  14. Solve for x : <b> (x + 3)/(x - 2) - (1 - x)/(x) = (17)/(4) , x - 0 , ...

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  15. Find two consecutive odd natural numbers , the sum of whose squares is...

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  16. A and B working together can do a work in 6 days . If A takes 5 days l...

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  17. Find x in terms of a , b and c : (a)/(x - a) + (b)/(x - b) = (2 c)/(...

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  18. Solve for x : (x - 1)/(2x + 1) + (2x + 1)/(x -1) = 2 , where x ne - ...

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  19. At t minutes past 2 pm, the time needed by the minutes hand of a clock...

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