Question

Calculate the discriminant.

x2 + 2x – 2 = 0

A.
12

B.
8

C.
–4

D.
–8

Answer 1

@acxbox22 @robtobey

Answer 2

you can calculate discriminant by using the formula b^2-4ac
a=1
b=2
c=-2
plug in the values from the equation and solve

Answer 3

\(\bf {\color{blue}{ 1}}x^2 {\color{red}{ +2}}x {\color{green}{ -2}} = 0\qquad discriminant\implies {\color{red}{ b}}^2 -4{\color{blue}{ a}}{\color{green}{ c}}\)

Answer 4

12

Answer 5

What number would you have to add to both sides to complete the square?

x2 + 12x = –6

A.
–36

B.<<<<<<<<<<<
36

C.
–144

D.
144

Answer 6

yes

Answer 7

both of them or just number 1

Answer 8

both