已知:x^2+y^2+6x-8y+25=0,求(x/x^2-y^2)÷y/(y-x)
来源：学生作业帮助网 编辑：六六作业网 时间：2025/01/21 22:08:55
已知:x^2+y^2+6x-8y+25=0,求(x/x^2-y^2)÷y/(y-x)已知:x^2+y^2+6x-8y+25=0,求(x/x^2-y^2)÷y/(y-x)已知:x^2+y^2+6x-8y
已知:x^2+y^2+6x-8y+25=0,求(x/x^2-y^2)÷y/(y-x)
已知:x^2+y^2+6x-8y+25=0,求(x/x^2-y^2)÷y/(y-x)
已知:x^2+y^2+6x-8y+25=0,求(x/x^2-y^2)÷y/(y-x)
x²+y²+6x-8y+25=0
(x²+6x+9)+(y²-8y+16)=0
(x+3)²+(y-4)²=0
x+3=0,y-4=0
x=-3,y=4
x/(x²-y²)÷y/(y-x)
=x/[(x+y)(x-y)]×(y-x)/y
=-x/[y(x+y)]
=3/[4×(-3+4)]
=3/4
即(x²+6x+9)+(y²-8y+16)=0
(x+3)²+(y-4)²=0
所以x+3=0，y-4=0
所以x=-3,y=4
所以原式=x/(x+y)(x-y)*[-(x-y)/y]
=-x/[y(x+y)]
=3/[4*(-3+4)]
=3/4
x^2+y^2+6x-8y+25=0
（x+3）²+（y-4）²=0
x+3=0，y-4=0
所以x=-3，y=4
x/(x^2-y^2)÷y/(y-x)
=x/(x+y)(x-y)×(y-x)/y
= -x/y(x+y)
=3/[4×（-3+4）]
=3/4
已知X*X+Y*Y+6X-8Y+25=0 求（Y/X)+(X/Y)-2=?
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^2+Y^2-6X-8Y+25=0,求Y/X-X/Y
已知x^2+y^2-6x-8y+25=0,求x分之y-y分之x
已知x平方+y平方+6x-8y+25=0,求y/x+x/y-2的值.
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
已知:x^2+y^2+6x-8y+25=0,求(x/x^2-y^2)÷y/(y-x)
已知x求^2+y^2-6x-8y+25=0求1/x-y /x+y/x^4-y^4
已知x-2y=2,求4x-y-8分之3x+y-6
已知|5x-y-8|+(7y-x+2)=0则4x+6y
已知x^2+y^2-16x-8y+25=0,求y/x-x/y的值
已知x+y＝8,x-y=6,求x²-y²-2x-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)
已知x+y/y=11/8,求x-y/x+2y的值.
已知x^2+y=8x+6y+25=0,求2x+3y的值
已知：x^2+y^2-6x+8y+25=0 求实数x,y,的值