已知X-3Y+4=0.求分式X^2-XY-6Y^2/2X+4Y的值
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/06/22 10:10:39
已知X-3Y+4=0.求分式X^2-XY-6Y^2/2X+4Y的值
![已知X-3Y+4=0.求分式X^2-XY-6Y^2/2X+4Y的值](/uploads/image/z/750475-19-5.jpg?t=%E5%B7%B2%E7%9F%A5X-3Y%2B4%3D0.%E6%B1%82%E5%88%86%E5%BC%8FX%5E2-XY-6Y%5E2%2F2X%2B4Y%E7%9A%84%E5%80%BC)
已知X-3Y+4=0,即X-3Y=-4
X^2-XY-6Y^2=(x+2y)(x-3y)
所以X^2-XY-6Y^2/2X+4Y=(x+2y)(x-3y)/2X+4Y=x-3y/2=-2
X^2-XY-6Y^2=(x+2y)(x-3y)
所以X^2-XY-6Y^2/2X+4Y=(x+2y)(x-3y)/2X+4Y=x-3y/2=-2
初中数学分式已知x/y=2,求(x*x-xy+3y*y)/x*x+xy+6y*y的值
已知x-y/xy=3,求分式2x+3xy-2y/x-2xy-y的值.
解一道分式题已知1/x-1/y=3 求分式(4x-5xy-4y)/(3x-2xy-3y)的值.
已知X-3Y+4=0.求分式X^2-XY-6Y^2/2X+4Y的值
已知1/x+1/y=3,求分式3x-2xy+3y/x+xy+y的值
已知,1/x+1/y=5.,求分式3x+xy+3y/x-2xy+y的值
已知3x-4y=0,求分式x^2+2xy/3x^2-y^2的值
已知3x-4y=0,求分式x平方+2xy/3x平方-y平方的值.
1.已知3/x=4/y,求分式x^2+2xy/3x^2-y^2的值.2.已知1/x-1/y=3,求分式3x+2xy-3y
已知x*x-4xy+4y*y=0 求[2x(x+y)-y(x+y)]/(4x*x-4xy+y*y)的值?
已知1/x-1/2y=1/3,求分式(2x+3xy-4y)/(x-3xy-2y)的值
已知1/x+1/y=4,求分式4x+3xy+4y/-3x+2xy-3y的值