The correct graph is graph B, which shows that the equation has two roots at approximately x = -1.414 and x =1.414.
The equation provided is: -x² – 1 = 2x^2 – 4.
To solve this equation, we need to rearrange it into quadratic form by moving all terms to one side and setting it equal to zero:
3x² - 3 = 0.
Now, we need to solve for x using the quadratic formula:
x = (-b ± √(b² - 4ac)) / (2a)
For our equation, a = 3, b = 0, and c = -3:
x = (0 ± √(0² - 4(3)(-3))) / (2(3))
x = ± √(36 / 18) = ± √2
So, the correct graph is graph B, which shows that the equation has two roots at approximately x = -1.414 and x =1.414.