- AIf the two roots coincide at
- BThe sum of the two roots the formula gives is
- CIf D is negative the formula still gives two real roots
- DThe formula works for every quadratic equation with a
Step-by-Step Solution
A negative discriminant makes non-real, so there are no real roots — that statement is false. The others are true: gives the repeated root ; adding and gives ; and the derivation only needs a .
Answer: C) If D is negative the formula still gives two real roots