6x+3y=48 3x+6y=42
来源:学生作业帮助网 编辑:作业帮 时间:2024/10/14 09:35:03
xSn@YT$c'V"⨟/fJ'@n4B@J['ʿ*)}9̽N`5u3ŀ5,;fI0I0<)k?~;ώ
'!'z|DE!0*6Y!!rS^Jk=iX@HMʇպNS9;ێWx9̿琨S 5ȣ睧ݪLzDn@]a0גLnysHh@fjOꨠd}pKG8Jn77jTl+)]. )E:3ib=kӊʶv/
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20
{(x+y)/2+(x-y)/3=6 4(x+y)-3(x-y)=-20
4(x+y)-3(x-y)=-20,2/x+y+3/x-y=6
2(x+y)-3(x-y)=1 6(x+y)+(x-y)=51
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2
6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5
(x+y)/2- x-y/2=6 3(x+y)=4(x-y)
x+y/3+x-y/2=6 4(x+y)-2(x-y)=40
若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于
6(x+y)的平方-11(x+y)(x-y)+3(x-y)的平方=?
{x=5y 3x+6y=42
x+y/2+ x-y/2=6 2(x+y)-3x+3y=24 求X Y
初二上学期方程题 4x+y=5 5x+4y=63x-2y=1 2x+3y=13x-2y=7 7x+5y=32x+3y=17 2x-y=-4x+5y=6 2x+y=23x-6y=4 3x+2y=52x+y=73x-4y=53x+y=1x-2y=-1x+y=42x+3y=92x-3y=74x+5y=3x+y=20004x+6y=90003x+5y=113x-2y=42x+3y=215x-2y=5x+y=54x+3y=182x+3y=16x+4y=132x+3y=40x
已知:2x+y=6,x-3y=1 求7y(x-3y)(x-3y)-2(3y-x)(3y-x)
(x+y)(x-y)+(x-y)^2-(6x^2×y÷2y-2xy^2÷2y)其中x=-3,y=1/3
已知xy=-2,x-y=3,求(x+y)(x-y)-y^2+(x-y)^2-(6x^2y-2xy^2)÷2y