若xx+yy-2x-6y+10=0,求分式(xx-yy)/xy的值.
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/13 14:43:07
若xx+yy-2x-6y+10=0,求分式(xx-yy)/xy的值.
xx+yy-2x-6y+10=0
(x^2-2x+1)+(y^2-6y+9)=0
(x-1)^2+(y-3)^2=0
(x-1)^2=0,(y-3)^2=0
x-1=0,y-3=0
x=1,y=3
(xx-yy)/xy
=(x^2-y^2)/xy
=(1^2-3^2)/1*3
=-8/3
由条件,(x-1)^2+(y-3)^2=0
x=1 y=3
所以所求分式=-8/3
xx+2x+yy+6y+10=0求xx+yy的值
若xx+yy-2x-6y+10=0,求分式(xx-yy)/xy的值.
若xx-2x+yy+6y+10=0 求xx-yyy的值
若xx-2x+yy+6y+10=0 求xx-yyy的值
已知xx+yy+4x-6y+13=0,求(xx-2x)/xx+3yy的值.
已知2x=3y,求xy/xx+yy-yy/xx-yy的值
已知xx yy 2x-6y 10=0求x,y的值已知xx+yy+2x-6y+10=0求x,y的值
若(xx)+(yy)-4x+6y+13=0,求2x+3y的值?
若xx+yy+2x-6x+10=0,求x乘以y的值再问一道 若代数式xx-6x+b可化为(x-a)(x-a)-1,则b-a的值是
若xx+2x+yy-8y+17=0,求x的y次幂的值.
(xx+yy)(xx+yy-10)+25=0求xx+yy的值
已知 xx-2x+yy+6y+10=0 求x+y的值快点.快点.急求.
已知x(x-1)-(xx-y)=-3求xx+yy-2xy
已知x(x+1)-(xx+y)=3,求(xx+yy)/2-xy的值
x(x+1)-(xx+y)=-3,求(xx+yy)/2-xy的值
若x-y=4,求(xx+yy)÷2-xy的值
若x-y=4,求(xx+yy)÷2-xy的值
x>0,y>0,x+y=1求1/(xx)+8/(yy)最小值x>0,y>0,x+y=1,求1/(xx)+8/(yy)最小值