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Which of the following equations has real roots?

2x2 - 3x + 4 = 0
(x - 1) (2x - 5) = 0
3x2 + 4x + 5 = 0
Cannot be determined

Correct Answer: (x - 1) (2x - 5) = 0

Explanation:

(x - 1) (2x - 5) = 0 ⇒ x = 1, 5/2
So, its roots are real.

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