Question

Ughhhh I KEEP ON GETTING -6!!

Answer 1

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

\[2x ^2 - 2x - 1 = 0\]

Answer 2

c is "-1", that's important

Answer 3

Discriminant Study Aid

Answer 4

Uhh so basically I wrote
\[A=2x^2 \]
B=2x
C=1
And I got them together 2-4(2)(1)

Answer 5

b² - 4 a * c


Do you agree that:

a = 2

b = -2

c = -1

Answer 6

Oh damn -1
i did just 1 /.<

Answer 7

b² - 4 a * c


( -2 )² - 4 * ( 2) * (-1) =

Answer 8

( -2 )² = ?

Answer 9

Oh an -2 too
4 woudl be the asnwer

Answer 10

Next:

4 * ( 2) * (-1) =

Answer 11

-8?

Answer 12

ok

Answer 13

ok?

Answer 14

Putting the problem back together:

( -2 )² - 4 * ( 2) * (-1) =

4 - ( -8) =

Answer 15

4 - ( -8) =

Answer 16

Sorry this lag is just killing me, okay my answer is 12.

Answer 17

Correct

Answer 18

( -2 )² - 4 * ( 2) * (-1) = 12

Answer 19

Oh thanks<3

Answer 20

Alrighty, then.