计算:2x+4分之3-4-x的平方分之6+2x-4分之9
问题描述：
计算:2x+4分之3-4-x的平方分之6+2x-4分之9
答
=3/2(x+2)+6/(x²-4)+9/2(x-2)=3(x-2)/ [2(x+2)(x-2)]+12/ [2(x+2)(x-2)]+9(x+2)/[2(x+2)(x-2)]=(3x-6+12+9x+18)/[2(x+2)(x-2)]=(12x+24)/[2(x+2)(x-2)]=6/(x-2)