x2+x+y2-y-2xy=?
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/16 14:38:26
x2+x+y2-y-2xy=?
x2+x+y2-y-2xy=?
x2+x+y2-y-2xy=?
x^2+x+y^2-y-2xy=x^2-2xy+y^2+x-y=(x-y)^2+(x-y)=(x-y)(x-y+1)
=x²-2xy+y²+x-y
=(x-y)²+(x-y)
=(x-y)(x-y+1)
=x2-2xy+y2+x-y
=(x-y)2+(x-y)
=(x-y)*(x-y+1)
(X-Y)(X-Y+1)
是化简吗
=(x2+y2-2xy)+(x-y)
=(x-y)2+(x-y)
=(x-y)(x-y+1)
x2+x+y2-y-2xy=?
已知x2+xy-2y2=0(y≠0),那么x/y=
因式分解 x2+4xy+4y2-2x-4y-35
因式分解;x2+4xy+4y2-2x-4y-35
因式分解:3X2十5xy-2y2+x+9y-4
已知x/y=2/7,则x2-3xy+2y2/2x2-3xy+7y2的值是多少?
x2-(a+b)xy+aby2 x2+4xy-5y2 x2-5x+3 2x2+xy-y2-4x+5y-6
若x2+4y2+2x-4y+2=0求5x2+16y2的算术平方根若2x平方-4x+2+根号[x+2y-1]=0求xy
因式分解:x2-9a2+12a-4;x2y+3xy2-x-3y;1-x2-2xy-y2;3a2+2b-2ab-3a;x2+y2+2xy+ax+ay;3x4-48y48a3-4a2-2a+1;x2-3xy-28y2;(x2-x)^2-4(x2-x)-12
求证x2+y2>等于xy+y+x-1
由X2-2XY+Y2-X+Y-1=0得到X-Y的值为.
若实数xy满足x2十y2-2x+4y=0,则x-2y的最大值为多少?
正数x,y满足x2-y2=2xy,求(x-y)/(X+Y)的值
多项式(4xy-3x2-xy+y2+x2)-(3xy+2y-2x2)的值( ) A、多项式(4xy-3x2-xy+y2+x2)-(3xy+2y-2x2)的值( )A、只与x的值有关; B、只与y的值有关;C、与x、y的值有关 ; D、与x、y
已知x,y为实数,且x方+xy+y方=3,求x2-xy+y2的最大值和最小值
多项式(4xy-3x2-xy+y2+x2)-(3xy+2y-2x2)的值( B) A、只多项式(4xy-3x2-xy+y2+x2)-(3xy+2y-2x2)的值( B)A、只与x的值有关; B、只与y的值有关;C、与x、y的值有关 ; D、与x
(x-y)(x2+xy+y2)
(x+y)(x2-xy+y2)