-2[(-3+2)(-3+1)] -2[(-3+2)(-3+1)] ----------------- = ------------------- -4-1 - (-1) -4-1 +1 -2[(-1)(-2)] = ---------------- -4 -2[2] = ---------- -4 -4 = ---------- -4 = 1
-2[(-3+2)(-3+1)] ----------------- = 1 -4-1 - (-1)