(X+Y)(X+Y+12)=15,则X+Y=
来源:学生作业帮助网 编辑:作业帮 时间:2024/10/06 00:35:18
(X+Y)(X+Y+12)=15,则X+Y=
(X+Y)(X+Y+12)=15,则X+Y=
(X+Y)(X+Y+12)=15,则X+Y=
X+Y= u
u(u+12)=15
u²+12u-15=0
u=-6±√51
3
已知实数x,y满足|x|+x+y=10、x+|y|-y=12,则x+y的值?
(X+Y)(X+Y+12)=15,则X+Y=
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
若(X×X+Y×Y)(X×X+Y×Y-5)=36,则X×X+Y×Y=
化简 x / y(x+y) - y / x(x+y) =
(x*x+y*y)(x*x+y*y)-(x*x+y*y)=12 求x*x+y*y等于多少
(12-x)*y+x*2=26 (15-x)*y+y*2=35(12-x)*y+x*2=26 (15-x)*y+y*2=35
x(x+y)(x-y)-y(y+x)(y-x)=(x-y)( )填空
y=x(x
x.y都是自然数,且x(x-u)-y(y-x)+12,求x.y得值快1且x(x-y)-y(y-x)=12
12x+20y=20x+15y
如果15x=6y,则x:y=
{(x,y) |x|+|y|
x>y?x:y
x=15y
x^2+xy=12,xy+y^2=15,求(x+y)^2-(x+y)(x-y)
若|x|+x+y=10,x+|y|-y=12,则x+y的值为多少
已知|x|+x+y=10 |y|+x-y=12 求 x+y=?