Solve[(2 x - 2) + (2 x + 2) == 43, x]
Solve[(2 x - 2)*(2 x + 2) == 4, x]
Solve[(2 x - 2) == (2 x + 2), x]
This is how I'd input this in to Wolfram Alpha or Mathematica. I had a look at the solutions and they seem correct:
1st Answer: x=43/3
2nd Answer: x=-Root(2) or x=+Root(2)
3nd Answer: No solution exists