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The roots of the quadratic equation −x2 − 2x − 3 = 0 are
Real and equal
Real and unequal
Not real
None of these
If the roots of the quadratic equation x2 - Bx + 4 = 0 are real and equal, then the value of B is
4
-4
±4
If the roots of the quadratic equation 2x2 + x + B = 0 are real, then B =
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