【数学分式计算,(a²-4)分之2a-(a-2)分之1 (x-3)分之1-(x+3)分之1
问题描述:
【数学分式计算,(a²-4)分之2a-(a-2)分之1 (x-3)分之1-(x+3)分之1
(a²-4)分之2a-(a-2)分之1
(x-3)分之1-(x+3)分之1
(a²-4a+4)分之(a-1)÷(a²-4)分之(a²-1)
【(x-2)分之3x-(x+2)分之x】×x分之(x²-4)
答
(a²-4)分之2a-(a-2)分之1 =2a/(a+2)(a-2)-(a+2)/(a+2)(a-2)=(2a-a-2)/(a+2)(a-2)=(a-2)/(a+2)(a-2)=1/(a+2)(x-3)分之1-(x+3)分之1 =(x+3)/(x+3)(x-3)-(x-3)/(x+3)(x-3)=(x+3-x+3)/(x+3)(x-3)=6/(x²...