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If one root of the equation (alpha-4)x^2...

If one root of the equation `(alpha-4)x^2+2x+1=0` is 1, then `alpha`=

A

1

B

2

C

3

D

4

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UNITED BOOK HOUSE-HOWRAH ZILLA SCHOOL-EXERCISE
  1. Price of a machine is Rs 2,00,000. The price of it decrease in 1st yea...

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  2. If one root of the equation (alpha-4)x^2+2x+1=0 is 1, then alpha=

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  3. If sin2 theta = cos 3 theta then theta=

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  4. If the height and area of base of a right circular cone increased by 1...

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  5. Median of 94,33,86,32,80,48,70 is

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  6. Ratio of the area of two similar triangles is 9:25. The ratio of their...

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  7. Fill in the blanks If the ratio of principal and amount in 1 year is...

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  8. Fill in the blanks If 5+sqrtx = y+sqrt2 (where sqrtx is a irrational ...

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  9. Prove that tan 1^@ tan 2^@ tan 3^@........ tan 88^@tan89^@=1

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  10. Fill in the blanks If two circles of radii 5 cma and 3 cm in length a...

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  11. Fill in the blanks If the ratio of the volume of two sphere is 1:8, ...

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  12. Fill in the blanks Value of overset(3)underset(I = 1)sum 10i^3 is.

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  13. Write True or False If the amount (principal+compound interest) of R...

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  14. Write True or False If x alpha y then x^n alpha y^n.

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  15. Write True or False Mean number of the numbers 5,6,7,8,9,10,11,12,13...

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  16. Write True or False If tan35^@ tan 55^@ = sinA then A =45^@.

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  17. Write True or False If the radius of a right circular cylinder is d...

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  18. Write True or False Only one circle can be drawn which touches the a...

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  19. Find the difference betweeen compound interest and simple interest of ...

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  20. Find the nature of the roots of the equation 2x^2-sqrt3x+2=0.

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