Q1:
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If a quadratic equation has no real roots the value of the discriminant could be: |
A. -3 B. 0 C. 1 D. 3 |
Answer 1: |
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Q2:
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If the value of the discriminant of a quadratic equation is 1 then the equation has:
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A. 0 roots B. 1 root C. 2 roots D. 3 roots |
Answer 2: |
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Q3:
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Find p so that x2 - 4x + p = 0 has one root.
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A. 2 B. -2 C. 4 D. -4 |
Answer 3: |
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Q4:
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What is the value of the discriminant for the equation px2 + qx + r = 0? |
A. q2 - 4pr B. q2 + 4pr C. r2 - 4pr D. r2 - 4qr |
Answer 4: |
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Q5:
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Which of these equations has two real roots? |
A. x2 - 4x + 4 = 0 B. x2 - x + 5 = 0 C. x2 - 10x + 100 = 0 D. x2 - 4x + 3 = 0 |
Answer 5: |
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Q6:
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In a quadratic equation, the value of b2 - 4ac is called: |
A. The denominator B. The diameter C. The discriminant D. The divisor |
Answer 6: |
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Q7:
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Which is true for the equation x2 -5x + 12 = 0? |
A. There are two real roots B. There is one repeated root C. There are no real roots D. There are two rational roots. |
Answer 7: |
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Q8:
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What is the value of the discriminant for the quadratic equation 4x2 - 25 = 0? |
A. -100 B. 100 C. -400 D. 400 |
Answer 8: |
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Q9:
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If the discriminant of a quadratic equation is -1, how many real roots will the equation have? |
A. -1 B. 0 C. 1 D. 2 |
Answer 9: |
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Q10:
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Find p so that px2 + 8x + 16 = 0 has one real root |
A. p = 1 B. p = 2 C. p = 4 D. p = 8 |
Answer 10: |
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