1)a discriminant of 0 indicates what type of roots?

a)two complex
b)one rational double
c)two rational
d)two irrational

2)the quadratic 2x2 + 6x + 3 has what type of roots?

a)two irrational
b)two complex
c)one rational double
d)two rational

3)the quadratic x2 + 20x + 100 has what type of roots?
answer
a)two irrational
b)two rational
c)one rational double
d)two complex

4)what is the possible discriminant of the graph? (graph in the link)

a)0
b)–11
c)73
d)25

5)what is the possible discriminant of the graph? (graph in the link)

a)0
b)17
c)25
d)–15