x+y=8,x^2 - y^2=48 ,则y-x=()
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/21 10:59:42
x+y=8,x^2-y^2=48,则y-x=()x+y=8,x^2-y^2=48,则y-x=()x+y=8,x^2-y^2=48,则y-x=()x+y=8x=8-yx^2-y^2=48(8-y)^2-
x+y=8,x^2 - y^2=48 ,则y-x=()
x+y=8,x^2 - y^2=48 ,则y-x=()
x+y=8,x^2 - y^2=48 ,则y-x=()
x+y=8
x=8-y
x^2 - y^2=48
(8-y)^2-y^2=48
64-16y=48
y=1
x=7
所以Y-X=-6
x^2-y^2=(x+y)(x-y)=8(x-y)=48
x-y=6,y-x=-6
6
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
12y(x-y)^2-8(x-y)^3=?
(x+y)^2-8(x+y)+48=
(x+y)^2-8(x+y)+48=
（x+2y)(x-2y)-(2y-x)(-2x-y)其中x=8,y=-8
[(x+2y)(x-2y)-(x-2y)^2+8y(x+y)]除以4x=
已知X*X+Y*Y+6X-8Y+25=0 求（Y/X)+(X/Y)-2=?
x*x+2x-y*y+6y-8=0,x+y不等于2,求x-y的值
x+y=8,x^2 - y^2=48 ,则y-x=()
填空：x-y/x+y=( )/x^2-y^2
（x-y)2•(y-x)³(x-y)=?
y+y'-2y=2x
微分方程y - 2y' + y = x
(x-y) (x-2y)+(x+2y) (x-3y)-2(x-3y) (x-4y)=
(x+y)(x-y)+(x-y)平方-(x-y)(3x-y) 其中x=-2 y=3分之一
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y)