Answer:
Step-by-step explanation:
Given:  –x² + 2x + 3 = x² – 2x + 3 .
To find: What are the solution(s) .
Solution: we have given that
 –x² + 2x + 3 = x² – 2x + 3 .
  On subtracting both side by x² .
-2x² + 2x + 3 =  x² - x² - 2x + 3 
-2x² + 2x + 3 = -2x +3 
 On Addition both side by 2x .
-2x² + 2x + 2x + 3  =-2x  +2x +3 
-2x² + 4x  + 3  = 3 
 On subtracting both side by -3  .
-2x² + 4x  + 3  -3 = 3  - 3 
-2x² + 4x   = 0 
Taking common  2x .
2x (- x +2 ) =0 .
On grouping  .
2x= 0 
so x= 0
Now , -x +2 =0 .
-x = -2 .
On dividing by -1 
x= 2 
Therefore , option B is 0 and 2 .