若x-y=1,则x方-y方-2y-5=
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/27 14:09:09
若x-y=1,则x方-y方-2y-5=若x-y=1,则x方-y方-2y-5=若x-y=1,则x方-y方-2y-5=x方-y方-2y-5=(x+y)(x-y)-2y-5=(x+y)×1-2y-5=x+y
若x-y=1,则x方-y方-2y-5=
若x-y=1,则x方-y方-2y-5=
若x-y=1,则x方-y方-2y-5=
x方-y方-2y-5
=(x+y)(x-y)-2y-5
=(x+y)×1-2y-5
=x+y-2y-5
=x-y-5
=1-5
=-4
x^2-y^2-2y-5
=(x+y)(x-y)-2y-5
=x+y-2y-5
=x-y-5
=1-5
=-4
(x+y)(x--y)-2y-5
=x+y-2y-5
=x-y-5
=-4
若x-y=1,则x方-y方-2y-5=
若x的绝对值+4≤4,x方+y方/x+y方=2,则代数式y方+4/x+y方的值是
化简求值,若X方-2XY+Y方+1XY-11=0,求X方+6XY+9Y方分之X方-25Y方*5X-25Y分之X+3Y的值
x方-y方-x-y=0 4x方-y方+2y-1=0 解这个二元二次方程组x方-y方-x-y=04x方-y方+2y-1=0
若(X方+Y方)的平方-5倍的(X方+Y方)-6等于0,则X方+Y方= 教教我
若X+Y=5,XY=2则X方+Y方=
若2x方+9xy-5y方=0,则x除以y=
若x+y=5,xy=2则x方+y方的值是多少
已知x+y=5,x方+y方=13,求代数式x方y+2x方y方+xy方的值
实数x,y满足x方+y方=2x,则x方-y方的最大值为________.
实数x,y满足(x方+y方)的平方+(x方+y方)-2=0.则x方+y方的值是
已知实数x y满足(x方-y方)(x方-y方-1)=2,求x方+y方的值.
已知x+y=1,求(x方-y方)的平方-2(x方+y方)
3x方+2y方=2x,求x方+y方范围
已知X方+Y方-6X-8Y+25=0 则2(y-x)方/4x方-4y方=是多少
4(x方+y)(x方-y)-(2x方-y)方,其中x=2,y=-3
〔2x方y-2xy方〕-[〔-3x方y方+3x方y〕+〔3x方y方-3xy方〕]已知x=-1,y=2
x方+xy-2y方=0,则(x方+3xy+y方)除(x方+y方)=?刚初中毕业,帮下