Question

If the line $l_1 : 3y - 2x = 3$ is the angular bisector of the lines $l_2 : x - y + 1 = 0$ and $l_3$ : $αx + βy + 17 = 0$, then $α^2 + β^2 \- α - β$ is equal to__

Answer 1

The Answer is 348