Question

1. A discriminant of 0 indicates what type of roots?

Two Irrational
Two Complex
Two Rational
One Rational Double
2. The quadratic x2 - 7x + 6 has what type of roots?

Two Irrational
Two Complex
Two Rational
One Rational Double
3. The quadratic x2 + 5x - 14 has what type of roots?

Two Irrational
Two Complex
Two Rational
One Rational Double


4. What is the possible discriminant of the graph?

a parabola opening up with vertex near negative 1.2 comma negative 9.1. a y intercept of negative 6

-11
zero
25
73

5. What is the possible discriminant of the graph?

a parabola opening up x intercepts near negative 7 and negative 3

-13
zero
15
16

Answer 1

I got D, C, C, D. Just make sure those are right. And don't get the last one too. @ganeshie8

Answer 2

just making sure*

Answer 3

1, 2, 3 questions are correct
im not sure about 4 and 5

Answer 4

I'll need to check the graph to confirm questions #4 and #5

Answer 5

oh okay. I will attach them, just a sec...

Answer 6

@ganeshie8

Answer 7

@Kainui

Answer 8

1)D one rational double because when the discriminant is zero you get one answer
2) C 2 rational roots because b^2 - 4ac a = 1, b = - 7, c = 6 and 49-4(1)(6)=25 since 25 is greater than zero it has 2 rational roots

Answer 9

3)C 2 rational roots. x=2,-7 because of (x-2)(x+7)

Answer 10

Awww thanks! do you understand #4 and #5

Answer 11

4) no not really
5) no not really
sorry:(

Answer 12

awww it's ok