已知x-y=8,(x+y)(x-y)=32,求x,y的值
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/25 03:54:56
已知x-y=8,(x+y)(x-y)=32,求x,y的值已知x-y=8,(x+y)(x-y)=32,求x,y的值已知x-y=8,(x+y)(x-y)=32,求x,y的值因为X-Y=8.(X+Y)(X-
已知x-y=8,(x+y)(x-y)=32,求x,y的值
已知x-y=8,(x+y)(x-y)=32,求x,y的值
已知x-y=8,(x+y)(x-y)=32,求x,y的值
因为X-Y=8.(X+Y)(X-Y)=32.所以X+Y=4.列方程相加:2x=12.得X=6.则:Y=-2
x-y=8
(x+y)(x-y)=32
那么x+y=4
x-y=8,那么x=8+y
8+y+y=4
y=-2
所以x=6
由x-y=8得 x=8+y
代入(x+y)(x-y)=32得
(8+y+y)*8=32
(8+2y)*8=32
64+16y=32
16y=32-64
16y=-32
y=-2
所以x=6
已知:3x-5y=0,求x/y,x-y/y,x-y/x
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
已知3x =2y 求x/x+y+y/x-y-y²/x²-y²
已知x-y=3,求[(x+y)(x-y)-(x-y)^2+2y(x-y)]除以的值
已知3x=8y,则x;y=?
已知x.x+y.y-6x-8y+25=0,求3x.x+5y的值
已知x,y为正整数,并且x*y+x+y=71,x*x*y+x*y*y=880,求3*x*x+8*x*y+3*y*y的值
已知x-y=8,(x+y)(x-y)=32,求x,y的值
已知|x|=2,|y|=3,|x+y|=-(x+y)求x-y
已知|3x-y|+|x+y|=0,求x-y除以x*y的值.
已知x/5=y/3,则(x/x+y)+(y/x-y)-(yxy/xxx-yxy)
已知实数x.y满足根号(x+y-8)+根号(8-x-y)=根号(3x-y-4)+根号(x-2y+7),求x,y
已知x-y/y=8/3,求x+y/y的值
已知X*X+Y*Y+6X-8Y+25=0 求(Y/X)+(X/Y)-2=?
已知2y-x=-3,求[4y(2x-y)-2x(2x-y)]/(2x-y
已知x-y=3,x+y=8,问x^2 -y^2=?
已知7Y=X-3,8Y=X+5 求X和Y
已知x-2y=2,求4x-y-8分之3x+y-6