灵鹊做题网初中分式约分 速度啊啊啊啊
来源：学生作业帮 编辑：灵鹊做题网作业帮 分类：数学作业 时间：2024/06/12 16:02:07
初中分式约分 速度啊啊啊啊
1 (X2-1)/(X2-X-2)=(X+1)(X-1)/【(X2-1)-(X+1)】=(X+1)(X-1)/【(X+1)(X-1)-(X+1)】=(X+1)(X-1)/(X+1)(X-2)=(X-1)/(X-2)
2 =【4-(a-1)2】/【(a-3)(a-4)】=(a+1)(3-a)/【(a-3)(a-4)】=-(a+1)/(a+4)
3 =(2-a)/(a-2)2=-1/(a-2)
4 =m(m-1)2/m(m-1)=m-1
5 =-(x-1)2/(x-1)(x+1)=(1-x)/(x+1)
6 =(6-2x)/(2-x)(3-x)=2(3-x)/(2-x)(3-x)=2/(2-x)
1/x-1/y=3 推出 (y-x)/xy=3 → y-x=3xy →x-y= -3xy →xy=(y-x)/3
=【5(x-y)+xy】/(x-y)-xy=(-15xy+xy)/(-3xy-xy)=-14xy/-4xy=7/2
2 =【4-(a-1)2】/【(a-3)(a-4)】=(a+1)(3-a)/【(a-3)(a-4)】=-(a+1)/(a+4)
3 =(2-a)/(a-2)2=-1/(a-2)
4 =m(m-1)2/m(m-1)=m-1
5 =-(x-1)2/(x-1)(x+1)=(1-x)/(x+1)
6 =(6-2x)/(2-x)(3-x)=2(3-x)/(2-x)(3-x)=2/(2-x)
1/x-1/y=3 推出 (y-x)/xy=3 → y-x=3xy →x-y= -3xy →xy=(y-x)/3
=【5(x-y)+xy】/(x-y)-xy=(-15xy+xy)/(-3xy-xy)=-14xy/-4xy=7/2