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If x=(sqrt3+1)/(sqrt3-1) and xy=1 then f...

If `x=(sqrt3+1)/(sqrt3-1)` and xy=1 then find the value of `(3x^2+5xy+3y^2)/(3x^2-5xy+3y^2)`

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UNITED BOOK HOUSE-JHOWDANGA SAMMILANI HIGH SCHOOL-EXERCISE
  1. If one root of the equation ax^2+bx+c=0 (a!=0) is twice the other, tha...

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  2. Solve: a/(x-b)+b/(x-a) = 2(x!=b,a)

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  3. If x=(sqrt3+1)/(sqrt3-1) and xy=1 then find the value of (3x^2+5xy+3y^...

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  4. If 15 farmers can cultivate 18 bighas of land in 5 days, then calculat...

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  5. If a^2/(b+c)=b^2/(c+a)=c^2/(a+b)=1, show that 1/(1+a)+1/(1+b)+1/(1+c)=...

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  6. If the 1st and 2nd of the five numbers in continued proportion are 2 a...

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  7. Prove that opposite angles of a cyclic quadrilateral are supplementary

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  8. State and prove Pythagoras theorem.

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  9. N is the foot of the perpendicular form P to the diameter AB of the ci...

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  10. Two chords AB and CD of a cricle with centre O intersect at P. Prove t...

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  11. Draw a right angled triangle whose adjacent sides of the right angle a...

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  12. Geometrically find the value of 2sqrt7. (Only traces f construction a...

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  13. If the sum of two angles is 135^@ and their difference is Pi/2, then d...

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  14. If costheta= x/sqrt(x^2+y^2) show that x sin theta = y cos theta.

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  15. Find the value of cos^2 30^@-2cos^2 60^@-4sin^2 45^@+tan45^@.

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  16. Two towers are situated at a distance of 150 metre and the height of o...

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  17. From a point on the horizontal line through the foot of a chimney the ...

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  18. There were 800 lit . 735 lit. and 575 lit. Kerosine oil in three Keros...

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  19. There is come water in a cylindrical pot whose base diameter is 12 cm ...

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  20. A right circular cylindrical tank of 9 metre height is filled with wat...

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