We "solve" equations, yours is not an equation.
Did you perhaps want to factor it ??
x^2 - (y^2 + 2y + 1)
= x^2 - (y+1)^2
ahhh, a difference of squares ...
= (x+y+1)(y-y-1)
How to solve
x^2-y^2-2y-1
2 answers
Oh okay thank you