1 |
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- A.
- B.
- C.
- D. none of these
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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 |
Four fourth roots of 625 are: |
- A. ±5,±5i
- B. ±5,±25i
- C. ±25,±25i
- D. none of these
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4 |
How many complex cube roots of unity are there: |
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5 |
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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6 |
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7 |
Solution set of the simultaneous equations : x + y = 1, x - y = 1 is: |
- A. {(0,0)}
- B. {(1,0)}
- C. {(0,1)}
- D. {(1,1)}
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8 |
One of the roots of the equation 3x2 + 2x + k = 0 is the reciprocal of the other, then k = ...............: |
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9 |
For what value of k, the sum of the roots of the equation x<sup>2</sup> + kx + 4 = 0 is equal to the product of its roots: |
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10 |
The roots of the equation 25x<sup>2</sup> - 30x + 9 = 0 are; |
- A. rational
- B. irrational
- C. equal
- D. complex
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