x+y=8,x-y=6求x^2-y^2-2x-2y的值
来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/09 09:40:00
x+y=8,x-y=6求x^2-y^2-2x-2y的值x+y=8,x-y=6求x^2-y^2-2x-2y的值x+y=8,x-y=6求x^2-y^2-2x-2y的值x+y=8,x-y=6求x^2-y^2
x+y=8,x-y=6求x^2-y^2-2x-2y的值
x+y=8,x-y=6求x^2-y^2-2x-2y的值
x+y=8,x-y=6求x^2-y^2-2x-2y的值
x+y=8,x-y=6求x^2-y^2-2x-2y的值
x^2-y^2-2x-2y=(x+y)(x-y)-2(x+y)=8*6-2*8=32
32
解: x^2-y^2-2x-2y=(x+y)(x-y)-2(x+y)=8*6-2*8=32
x^2-y^2-2x-2y=(x-y)(x+y)-2(x+y)=8*6-2*8=32
哈哈，此题难住我了！是个好题！
你是个高手。。
已知X*X+Y*Y+6X-8Y+25=0 求（Y/X)+(X/Y)-2=?
x*x+2x-y*y+6y-8=0,x+y不等于2,求x-y的值
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
x,y 满足x(x-2)-y(y-6)=-10,求x,y的值
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
x+y/2+ x-y/2=6 2(x+y)-3x+3y=24 求X Y
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
已知x.x+y.y+8x+6y+25=0,求代数式(x.x-4y.y)/(x.x+4xy+4y.y)-x/(x+2y)的值
【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+y=8,x-y=6求x^2-y^2-2x-2y的值
已知：2x+y=6,x-3y=1 求7y(x-3y)(x-3y)-2(3y-x)(3y-x)
已知x^2+y^2-6x-8y+25=0,求分式y/x - x/y的值
已知x^2+y^2-6x-8y+25=0 求y/x-x/y的值
已知x,y满足x^2+y^2-6x+8y+25=0,求y^x的值
已知x+y＝8,x-y=6,求x²-y²-2x-2y的值.
已知X^2+Y^2-6X-8Y+25=0,求Y/X-X/Y
已x²+2x-y²+6y-8=0,且x+y≠2,求x-y
已知x^2+y^2-6x-8y+25=0,求x分之y-y分之x