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Solve the followings : 9 x^2 +15x +4 = ...

Solve the followings : ` 9 x^2 +15x +4 = 0`

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The correct Answer is:
`- 1//3, - 4//3`
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PRADEEP-MATHEMATICAL TOOLS-PROBLEMS FOR PRACTICE
  1. Solve the following : 10 x^2 - 27 x +5 = 0

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  2. Solve the following : 3 x^2 - 8 x +5 = 0

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  3. Solve the followings : 9 x^2 +15x +4 = 0

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  4. Solve the followings : x^2 +4x - 5 = 0

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  5. Solve the following equation , 3x^2 +6x -9 =0

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  6. Solve the following : 5 x^2 + 4x -7 = 0

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  7. Solve the equation for x : 4x^2 - 4ax + (a^2 -b^2) = 0.

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  8. Expand using binomial (1+3 x)^3 upto the term having x^3.

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  9. Evaluate (999)^(1//3) upto 4 places of decimal.

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  10. Evaluate sqrt(26) correct upto four places of decimal.

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  11. The value of acceleration due to gravity (g) at height h above the sur...

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  12. Simplify the following. Using Binomial theoremE=K[(1+(Deltatheta)/thet...

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  13. Evaluate (1.056)^(1//3) correct up to the four places of decimal.

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  14. Identify , whether the following equation represent a straight line , ...

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  15. Identify , whether the following equation represent a straight line , ...

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  16. Identify , whether the following equation represent a straight line , ...

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  17. Find the value of the following : (a) sin ( - 30^(@)) (b) cos (-60^(@...

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  18. Find the value of the following : (a) sin 120^(@) (b) cos 135^(@) (c ...

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  19. Find the value of the following : (a) sin 210^(@) (b) cos 220^(@) (c ...

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  20. If sin theta = 3//5, find the values of costheta and tantheta.

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