(x+y)(x-y)-(2x+y)(x-y+1)计算要过程

来源：学生作业帮助网 编辑：作业帮 时间：2024/11/20 00:25:48
(x+y)(x-y)-(2x+y)(x-y+1)计算要过程
x)ӨЮԨЭ0 5_[|_o&Hhv61,i[g[ @) iTQ TSQ *EUR2t AB D鲦g\5al.\ۺ:$

(x+y)(x-y)-(2x+y)(x-y+1)计算要过程
(x+y)(x-y)-(2x+y)(x-y+1)计算要过程

(x+y)(x-y)-(2x+y)(x-y+1)计算要过程
(x+y)(x-y)-(2x+y)(x-y+1)
=x^2-y^2-(2x^2-2xy+2x+xy-y^2+y)
=x^2-y^2-2x^2+2xy-2x-xy+y^2-y
=-x^2+xy-2x-y
如果不懂,祝学习愉快!

计算什么

=x平方+xy-xy-y平方-2x平方+2xy-2x-xy+y平方-y
=x平方--2x平方-y平方+y平方-2xy-xy-2x-y
=-x平方-3xy-2x-y
=-(x平方+3xy+2x+y)

=(x+y)(x-y)-(2x+y)(x-y)-(2x+y)=-x(x-y)-2x-y=~~

x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 化简y(x+y)+(x+y)(x-y)-x^2 {(x,y) |x|+|y| x>y?x:y 因式分解x(x+y)(x-y)-x(x+y)^2 (x+y)(x-y)-(x-y)^2如题 (x+y)(x-y)-(x-y)^2 【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) x^2(x-y)+(y-x) x(x-y)2-(y-x)3 计算:y-x分之x+y+x-y分之y-y-x分之2x-y [(x-y)^2-(x+2y)(x-2y)]/y 【(x-y)^2+(x+y)(x-y)】除以 2x [(x-y)²+(x+y)(x-y)]除以2x [2/3x-2/x+y(x+y/3x-x-y)]/x-y/x 化简：{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x 计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x 化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x x^/y-x-y^/y-x化简.