Q15 of 256 Page 7

Mark the correct alternative in the following:
If a > 0 and discriminant of ax² + 2bx + c is negative, then is

discriminant of ax² + 2bx + c =0

and ax² + 2bx + c

R₃→ R₃ – X R₁ – R₂

- (2ax + 2bx +c)(-b² + ac) < 0

Mark the correct alternative in the following:

If ω is a non-real cube root of unity and n is not a multiple of 3, then is equal to

Mark the correct alternative in the following:

If , then the value of is

Mark the correct alternative in the following:

The value of is

Mark the correct alternative in the following:

Mark the correct alternative in the following:If a > 0 and discriminant of ax2 + 2bx + c is negative, then is