1 |
Four fourth roots of 625 are: |
- A. ±5,±5i
- B. ±5,±25i
- C. ±25,±25i
- D. none of these
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2 |
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3 |
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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4 |
For what value of k, the roots of the equation x<sup>2</sup> + √k x + 2 = 0 are equal: |
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5 |
No. of ways of solving a quadratic equation: |
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6 |
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- A.
- B.
- C.
- D. none of these
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7 |
Equations having a common solution are called: |
- A. linear
- B. quadratic
- C. homogeneous
- D. simultenaeous
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8 |
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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9 |
Sum of roots of ax<sup>2</sup> + bx + c = 0 is equal to product of roots only if: |
- A. a+c=0
- B. b+c=0
- C. a+b=0
- D. a+b+c=0
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10 |
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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