已知:x+y=10,xy=9,求x-y
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/03 02:13:30
![已知:x+y=10,xy=9,求x-y](/uploads/image/z/10360449-9-9.jpg?t=%E5%B7%B2%E7%9F%A5%3Ax%2By%3D10%2Cxy%3D9%2C%E6%B1%82x-y)
x){}K*+m
t**m-umlЭI*#_`gCH=@=jʆֶ
mIf&`?7+*ha_\gr ]N
已知:x+y=10,xy=9,求x-y
已知:x+y=10,xy=9,求x-y
已知:x+y=10,xy=9,求x-y
(x-y)²= (x+y)²-4xy
(x-y)²= 64
解得
x-y = ±8
已知x-xy=8,xy-y=-9,求x+y-2xy的值
已知2x+xy=10,3y+2xy=6.求4x+8xy+9y=?
已知x-y=9,xy=5.求(x+y)(x+y)的值?
已知x-y=9,xy=负20,求(x+y)(x+y)
已知X+y=10,XY=24,求(X-Y)(X-Y)的值
已知x^2-6xy+9y^2=0,求(x-y)/(x+y)
已知x,y满足xy-x-y=10,求整数x,y的值
已知x²y²+x²+y²=10xy-16 求x,y
已知:x+y=10,xy=9,求x-y
已知x^2+9y^2-2x-6y+2=0,求{-(xy/(x-y)^2}^4*(y^2-xy/x)^3*x^4/y^10/(x/xy-y^2)^5的值
已知x+y=12,xy=9,求(x+3xy+y)/(xy+xy)的值
已知(1/x)-(1/y)=5,求(6x+7xy-6y)/(8y-9xy-8y)
已知(x+y)(x+y)=25,(x-y)(x-y)=9求xy与xx+yy的值
已知x+y+yz=5,y+z+xy=8,x+z+xy=9,求x,y,z
已知X+Y=3,XY=-1,求2(X-Y)^4-9(X-Y)^2+12XY
已知x+y=3,xy=-10,求(1)x平方-xy+y平方;(2)|x-y|
已知x+y=-2,求代数式(6xy+10y)+[4x-2(3xy+2y-x)]
已知x*x-4xy+4y*y=0 求[2x(x+y)-y(x+y)]/(4x*x-4xy+y*y)的值?