What is the value of b2 - 4ac for the following equation?

2x 2 - 2x - 1 = 0

The value of the discriminant is 12.

Step-by-step explanation:

We are given the quadratic equation is .

Now, we know,

The discriminant for the quadratic equation is given by .

On comparing the equations, we have,

a= 2, b= -2 and c= -1

So, the discriminant is given by,

i.e.

i.e. D= 12

Hence, the value of the discriminant is 12.

i am sorry it just submitted an answer but the answer is 365 boys. hopes this

step-by-step explanation:

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.