| 1 |
Sum of all four fourth roots of unity is: |
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| 2 |
The other name of quadratic equation is: |
- A. linear equation
- B. 1st degree equation
- C. 2nd degree equation
- D. none
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| 3 |
Four fourth roots of 625 are: |
- A. ±5,±5i
- B. ±5,±25i
- C. ±25,±25i
- D. none of these
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| 4 |
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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| 5 |
If α, ß are the roots of x<sup>2</sup> + kx + 12=0 such that α-ß = 1 then K = : |
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| 6 |
How many complex cube roots of unity are there: |
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| 7 |
If 4<sup>x</sup> = 2, then x equals: |
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| 8 |
If the sum of the roots of ax<sup>2</sup> - (a + 1) x + (2a + 1) = 0 is 2, then the product of the roots is: |
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| 9 |
If one root of 2x<sup>2</sup> + ax + 6 = 0 is 2 then the value of a is: |
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| 10 |
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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