If x2 - 4x + log1/2(a) = 0 does not have two distinct real roots, then maximum value of a is
None of these
The roots of the quadratic equation 2x2 + 3x + 1 = 0 are
rational
irrational
imaginary
None of these
If where A and B are real numbers, then A and Bare equal to
A = - 4, B = 2
A = 2, B = - 4
A = 2, B = 4
None of these
If 1, w and w2 are the cube roots of unity, then the value of (1 - w + w2)(1 + w - w2) is equal to
4
0
2
3