If a and b are the roots of x2 + p x + 1 = 0, and c and d are the roots of x2 + qx + 1 = 0, then the….

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If a and b are the roots of x² + p x + 1 = 0, and c and d are the roots of x² + qx + 1 = 0, then the value of E = (a – c)(b – c)(a + d)(b + d) is

Options :-

1. p² - q²
2. q² - p²
3. q² + p²
4. None of these

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