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If the product of two roots of the equat...

If the product of two roots of the equation `x^2-3x+k=10` is -2 then k=

A

`-2`

B

`-8`

C

8

D

12

Text Solution

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UNITED BOOK HOUSE-DAULATPUR DALUICACHA BHARATI VIDYALAYA-EXERCISE
  1. Multiple Choice Questions (MCQ) If a principal becomes twice of its am...

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  2. If the product of two roots of the equation x^2-3x+k=10 is -2 then k=

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  3. Length of radius and length of one chord of a circle are 13 cm and 10c...

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  4. In triangleABC,sin((B+C)/2)=

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  5. In a right circular cylinder, if the length of radius is halved and he...

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  6. If the median of arranging the ascending order of data 8,9,12,17,x+2,...

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  7. Fill in the blanks If the principal of 1st year at the rate of r% co...

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  8. Fill in the blanks Conjugate surds of (sqrt3-5) is.

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  9. In ABCD is a cyclic parallelogram then angleA=

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  10. Fill in the blanks If sin(theta-30^@)=1/2 then cos theta=.

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  11. Fill in the blanks Number of surfaces of a solid hemisphere is.

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  12. Fill in the blanks If the mean of n numbers x1,x2,x3,….,xn is barx t...

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  13. In a business, the ratio of the capital of Rajus and Asif is 5:4 and i...

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  14. To warn ships for underwater rocks, a lighthouse spreads a red colored...

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  15. If two circles of radii 7 cm and 3 cm touch each other extermally, the...

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  16. cos^2 20^@+cos^2 70^2 = 1.

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  17. Write true or false: If the ratio of the total surface area of two cu...

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  18. Define Assumed Mean Method Formula elaborately.

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  19. In a partnership business, the ratio of the capital of Pritha and Rabe...

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  20. What is the rate of simple interest per annum, when the interest of so...

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