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x = (sqrt3 + 1)/(sqrt3 - 1) and y = (sqr...

`x = (sqrt3 + 1)/(sqrt3 - 1)` and `y = (sqrt3 - 1)/(sqrt3 + 1)`. Then `(x^2 + xy + y^2)/(x^2 -xy + y^2)` is equal to :

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UNITED BOOK HOUSE-RAMKRISHNA MMISSION BOYS SCHOOL-EXERCISE
  1. From the equation whose roots are reciprocals to the roots of the equa...

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  2. A clock seller sold a clock by purchasing it at Rs 336. The amount of ...

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  3. x = (sqrt3 + 1)/(sqrt3 - 1) and y = (sqrt3 - 1)/(sqrt3 + 1). Then (x^2...

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  4. To dig a well of x dcm deep, one part of the total expenses varies di...

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  5. If x : a = y : b = z : c,then show that : (a^2+b^2+c^2)(x^2+y^2+z^2) =...

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  6. a+b+c+d=4 হলে , 1/((1-a)(1-b)(1-c)) +1/((1-b)(1-c)(1-d))+1/((1-c)(1-d)...

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  7. Answer any One queation : Prove that, if a perpendicular is draw on t...

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  8. Prove that the tangent and the radius through the point of contact of ...

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  9. Answer any One question : In triangleABC, AD is perpendicular on BC a...

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  10. Two circles touch externally at P. A direct common tangent AB to two c...

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  11. Geometrically find the value of sqrt(21),

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  12. Construct a triangle whose two sides are 9 cm and 7 cm and the angle b...

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  13. Find the circular value of 52^@52'30''.

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  14. If cot^4theta-cot^2 theta = 1 then show that sec^4 theta-sec^2 theta=1...

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  15. Find the value of : (sec17^@)/(cosec73^@)+(tan68^@)/(cot22^@)+cos^244^...

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  16. From a point on the roof a house 11 metres height, it is observed that...

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  17. If the angle of depression of two consecutive km stones on a road fro...

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  18. The volume of a sphere and a right circular cone are same. The height ...

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  19. An outlet pipe in the roof with length 13m and breadth 11m was closed ...

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  20. The external radius of a hollow sphere made of lead sheet of 1 cm thic...

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