Hope this helps :) If you have a doubt just comment :)
Answer:
Vigil for an hour and two
-x^2 + 4 = 2x + 1
-x^2 - 2x + 4 - 1 = 0
-x^2 - 2x + 3 = 0
(x + 3)(-x + 1)= 0
x + 3 = 0 -x + 1 = 0
x = -3 -x = -1
x = 1
so x = -3 and x = 1
The answer is: E
Hope this helps|
Ok so ummmm idk how to speck in that but well ummmmm idk