You can put this solution on YOUR website! What is that method? The polynomial looks like might be a square expression, but hard to know just by looking.
-----that's not it;
......
......
That is not it either.
------does not give what you want.
Jumping right to general solution method for "quadratic",
discrim is , so no real solution for the .
A quick check of the graph for using software shows no roots, or no real roots. Your left side member IS NOT factorable for real numbers.