(4x^2-9y^2)/(2x+3y)=多少
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(4x^2-9y^2)/(2x+3y)=多少(4x^2-9y^2)/(2x+3y)=多少(4x^2-9y^2)/(2x+3y)=多少2x-3y个方法结合的同意同意同意同意同意同意同意同意同意同意同意同
(4x^2-9y^2)/(2x+3y)=多少
(4x^2-9y^2)/(2x+3y)=多少
(4x^2-9y^2)/(2x+3y)=多少
2x-3y
个方法结合的同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意感觉到他眼睛也大过春节的紧固件给你发个各个端口国防部发个宝贝宝贝宝贝是离开过半年kbn.n.n.n.n.n.n.n.n.n.n.n.n.n.n.n.n.fgk.jjjjfgbkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkfb你年年年年年年年年年年女包vb...
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个方法结合的同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意同意感觉到他眼睛也大过春节的紧固件给你发个各个端口国防部发个宝贝宝贝宝贝是离开过半年kbn.n.n.n.n.n.n.n.n.n.n.n.n.n.n.n.n.fgk.jjjjfgbkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkfb你年年年年年年年年年年女包vbvbvbvbvbvbvbvbvbvbvbvbvbcbcnvnbfgjbnjnfgbk.jgs接口上方的还是飞机快乐不快乐发到你办理答复你不瞌睡了反驳你发病年龄分布克劳福德不开飞机可局部地方能办理法国和颠覆与服务人员的哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈
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(4x^2-9y^2)/(2x+3y)=2x-3y
3(x+y)-2(x-y)=11 4(x+y)+3(x-y)=9
4(x-y)-3(x-y)=9 5(x-y)+2(x-y)=11
(x-y) (x-2y)+(x+2y) (x-3y)-2(x-3y) (x-4y)=
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
9y=3x-(x-1),4(x+y)-(2x+4)=8y
根据3(x+y)-2(x-y)=11,4(x+y)+3(x-y)=9可得出x+y= ,x-y=
81/8*(-x-y)^6*(x-y)^3*4/9(x+y)^4*(y-x)^2
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2
(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
2(x+y)-3(x-y)=3 ,4(x+y)+3(x-y)=15
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
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
3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27
先化简再求值(x-y)(x-2y)+(x-2y)(x-3y)-2(x-3y)(x-4y) x=4 y=5
已知2y-x=-3,求[4y(2x-y)-2x(2x-y)]/(2x-y