1.(x-8y)(x-y+3)2.3.如图,△ABC中,D为AB中点,E在AC上,且BE垂直AC,若DE=10,AE=16,则BE的长度为（）【求完整解题过程】急用，

因式分解：a(x-y)^2+b(y-x)^3 4(x-y)^2+8(y-x)(x+y)1.a(x-y)^2+b(y-x)^3 2.4(x-y)^2+8(y-x)(x+y) (x+y)(x-y)-(x-y)^2如题 (x+y)(x-y)-(x-y)^2 1.（（y+2x)(-2x+y)+4(x+2y)^2)/3y 2.（2(x-y)^3-8(x-y）^2(x+y)+6y(x-y)^2）/2（x-y)^2 (2x+y)²+(x+3y)(x-3y)-x(5x+8y)因式分解 计算[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y如题 [2(x-y)^5-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2[2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2 (3x-y)(3y+x)-(x-y)(x+y) 求二元一次方程练习题!如x-y=33x-8y=14x=y+3要习题。 【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2= (x-8y)(x+y) 1.（x+2)^2-(x+y)^32.(x-y)^2-(x-y)^33.(x-y)^2-(y-x)^3 【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) 如题{(X,Y)|(X+2)²+|Y-3|=0,X,Y属于R}= 如题{(X,Y)|(X+2)2+|Y-3|=0,X,Y属于R}= (x+y)/y=8/3则x/y=__ y/x-y=___ (x+y)/y=8/3则x/y=__ y/x-y=___ 考考你：二元一次方程1.X-Y=-5,3X+2Y=10 2.3X-Y=7,5X+2Y=8 x不等于y,比大小：x^4-x^3*y与x*y^3-y^4如题