Question

Which of the following equations has two distinct real roots?
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Answer 1

Answer:

options A

Step-by-step explanation:

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Answer 2

Answer:

1). x² + x - 5 = 0

Step-by-step explanation:

The quadratic equation f(x) = ax² + bx + c has two distinct real roots if D = b² - 4ac > 0

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1). x² + x - 5 = 0

D = 1² - 4(- 5) = 21 > 0

2). 5x² - 3x + 1 = 0

D = (- 3)² - 4(5)(1) < 0

4). x² + x + 5 = 0

D = 1² - 4(5) < 0