| 1 |
If α, ß are complex cube roots of unity, then 1 + α<sup>n</sup> + ß<sup>n</sup> = .......... where n is a positive integer divisible by 3: |
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| 2 |
Complex roots of real quadratic equation always occur in: |
- A. conjugate pair
- B. ordered pair
- C. reciprocal pair
- D. none of these
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| 3 |
How many complex cube roots of unity are there: |
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| 4 |
The ration of the sum and product of roots of 7x<sup>2</sup> - 12x + 18 = 0 is: |
- A. 7:12
- B. 2:3
- C. 3:2
- D. 7:18
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| 5 |
For what value of k, the roots of the equation x<sup>2</sup> + √k x + 2 = 0 are equal: |
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| 6 |
The roots of the equation: |
- A. complex
- B. irrational
- C. rational
- D. none of these
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| 7 |
Sum of all three cube roots of unity is: |
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| 8 |
In ax<sup>2</sup> + bx + c = 0, if b<sup>2</sup> - 4ac > 0 and perfect square the roots are: |
- A. rational
- B. irrational
- C. equal
- D. complex
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| 9 |
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- A. quadratic equation
- B. reciprocal equation
- C. exponential equation
- D. none of these
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| 10 |
No. of ways of solving a quadratic equation: |
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