16x^2+()+9y^2=()^2
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:2024/07/26 21:12:08
16x^2+()+9y^2=()^2
16x^2+(24xy)+9y^2=(4x+3y)^2
已知4x=9y求(1)x+y/y (2)y-x/2x
[x(x-y)-y(x-y)+(x+y)(x-y)]÷2x其中x=2012 y=2013
5x=3y,(2x+y)的平方=5x(x+y)+9
9y=3x-(x-1),4(x+y)-(2x+4)=8y
已知2x-y/x+2y=3,求2(2x-y)/x+2y-9(x+2y)/2x-y+3的值.
3x-2y=9 x-3y=2 x+y=5 x+2y=3 y=x 2x+y=8
3y=2x y/3=x/2 12/x=9/y y/x=?y/x=?x/y=?
已知X.x+y.y-4x+2y+5=0,求4X.X-12X Y+9Y.y的值
(x+y)^2-16(x-y)^2
已知X-Y/X+Y=3,求代数式2(x-y)/X+Y-3X+Y/X+Y
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
y'-2y=(e^x)-x