223

(1, 2), (1, 0), (1, -2)
y^3=x+4y-1
\left(1{,}\ 2\right)
2^3=1+4\cdot2-1
8=1+8-1
\left(1{,}\ 0\right)
0=1-1
\left(1{,}\ -2\right)
-8=1-8-1
-8=-8