(2y-xy)分之(x²-2x)
=[y(2-x)]分之[x(x-2)]
=[-y(x-2)]分之[x(x-2)]
=-y分之x
=-28分之(-6)
=14分之3
猜你喜欢
- 1翩翩起舞造句教教我吧!
- 2the Chinese people ____friendly ____us .A)is for b)are to c)are with d)is at 选 b
- 3已知平面向量向量a=（2,3）,b(x,y),向量b-2向量a=（1,7）,则X、Y的值分别是
- 415课凡卡全文批注
- 5It is dangerous for you to play with fire.()()()()is dangerous for you.
- 6小学数学题满200返300,折扣数等于几
- 7连接任意四边形,矩形,菱形,正方形,平行四边形中点得到的图形,加理由.
- 8WHAT IS YOUR EARLIEST HUMAN MEMORY?
- 9急需以下四个实验的：（实验目的,原理,结果,结论）蛋白质的盐析,重金属盐类沉淀蛋白质,沉淀生
- 10古字组词有哪些