解:y-(b²-b-2)=-(1/3)(x-b)(1)视觉上,该等式已最简,无需化简(2)可以化为其它形式y-(b²-b-2)=-(1/3)(x-b)3y-3(b²-b-2)=-(x-b)3y-3(b²-b-2)+(x-b)=03y+x=3b²-4b-6