Question

For which values of a, b, and c can you not use the quadratic formula?

A. a=-1, b = -1,c=0
B. a=-1, b =-1,c = -1
c. a = 0,b=-1,c=-1
D. a=-1, b = 0,C=0

Answer 1

D.a=-1,b=0,c=0 I’m not sure but I think that’s the answer

Answer 2

Ummm all of them are wrong
One of the answers should be:
a=1, b=-1, c=0