Which equation has no real roots? a. x2 – 6x + 12= 0 b. x2 – 25 = 0 c. x2 + 11x = 0 d. x2 + 12x + 11= 0

A

Step-by-step explanation:

To find the number of real roots for a quadratic, we apply the discriminate. The discriminate is the inside portion of the square root from the quadratic formula.

a. where a=1, b=-6, and c=12

    has no real roots

b. where a=1, b=0, and c=-25

    has 2 real roots

c. where a=1, b=11, and c=0

    has 2 real roots

d. where a=1, b=12, and c=11

    has 2 real roots

1. 8

2. 9

3. 20

4. 3

5. 17

6. 2.2

7. 11.25

8. 1

9. 14

10. 2

step-by-step explanation:

thats the first half