求解初中数学题（x-y)-2(y-x) 2(x-y)-8(y-x) x(a-3)-(3-a) (x2-y2)-3(x+y)求解因式分解法.八年级数学.谢

来源：学生作业帮助网编辑：作业帮时间：2024/05/06 03:59:39

求解初中数学题（x-y)-2(y-x) 2(x-y)-8(y-x) x(a-3)-(3-a) (x2-y2)-3(x+y)求解因式分解法.八年级数学.谢
求解初中数学题（x-y)-2(y-x) 2(x-y)-8(y-x) x(a-3)-(3-a) (x2-y2)-3(x+y)求解因式分解法.八年级数学.谢

求解初中数学题（x-y)-2(y-x) 2(x-y)-8(y-x) x(a-3)-(3-a) (x2-y2)-3(x+y)求解因式分解法.八年级数学.谢
（x-y)-2(y-x)
=(x-y)+2(x-y)
=3(x-y)
=3x-3y
2(x-y)-8(y-x)
=2(x-y)+8(x-y)
=10(x-y)
=10x-10y
x(a-3)-(3-a)
=x(a-3)+(a-3)
=(a-3)(x+1)
(x2-y2)-3(x+y)
=(x+y)(x-y)-3(x+y)
=(x+y)(x-y-3)

1.
（x-y)-2(y-x)
=(x-y)+2(x-y)
=3(x-y)
2.
2(x-y)-8(y-x)
=2(x-y)+8(x-y)
=10(x-y)
3.
x(a-3)-(3-a)
=x(a-3)+(a-3)
=(a-3)(x+1)
4.
(x2-y2)-3(x+y)
=(x+y)(x-y)-3(x+y)
=(x+y)(x-y-3)

检查一下题

（x-y)-2(y-x) 2(x-y)-8(y-x) x(a-3)-(3-a) (x2-y2)-3(x+y)
=(x-y)+4(x-y)²+8x(x-y)(a-3)+2(a-3)(x-y)-3(x+y)
=(x-y) [1-4(x-y)] + (a-3) (x-y) (8x+2) -3(x+y)
=(x-y)[1-4(x-y)+(a-3)(8x+2)]-3(x+y)
应该就是这样了，哈哈

1.
=(x-y)+2(x-y)
=3(x-y)
=3x-3y
2.
=2(x-y)+8(x-y)
=10(x-y)
=10x-10y
3.
=x(a-3)+(a-3)
=(a-3)(x+1)
4.
=(x+y)(x-y)-3(x+y)
=(x+y)(x-y-3)

求解初中数学题（x-y)-2(y-x) 2(x-y)-8(y-x) x(a-3)-(3-a) (x2-y2)-3(x+y)求解因式分解法.八年级数学.谢数学题：(x+3y)(x_3y)_(x_3y)2,求解! 求解一道数学题；（xy-1)^2+(x+y-2)(x+y-2xy) 分解因式求解一道数学题；（xy-1)^2+(x+y+2)(x+y+2xy) 分解因式数学题求解(3x-2y)(9x^2+6xy+4y^2)(27x^3+8y^3) 一道初中数学题（计算,4(x+2y)^2-25(x-y)^2 一些初中数学题,求解.速度.急1、 x^2 +y^2 =8.25,x-y=1.5,则（xy）^4=2、若x-1=1/n^2,则x^2-2x/n^2+1= 一道数学题,(x-y)^3×(x-y)^2×(y-x) 求解微分方程 y''+y'=-2x 初中数学题分解因式 x(x-y)²-y(x-y)² (2a+b)(2a-3b)-3a(2a+b)初中数学题分解因式x(x-y)²-y(x-y)²(2a+b)(2a-3b)-3a(2a+b)x(x+y)(x-y)-x(x+y)² 初中数学题(-x-y+5)-(4x+3y-1)-(-4x-5y) 其中x-y＝-10 求解一道数学题若x+y+z+3=2(根号x+根号y+1+根号z-1),求（x+y+z)的（y-z）次方初中数学因式分解：x^2y-y 求解数学题：已知X+Y-2(√X+√(Y+1))+1=0 求XY的值数学题求解x平方-6x+y平方+10y+34=0求x平方+3x除以2xy+2y的值初中数学题在线解答:y=1/x是不是函数? 初中数学题在线解答:y=1/x是不是函数? 初中数学题：已知x,y都是正整数有方程x^2-xy-y^2+12y=12,求x,y. 先谢谢了!