x^2-y^2=12,x-y=2,则x/y=?x^2+3x-5=a(x+1)^2+b(x+1)+c,a=?b=?c=?已知a,b,c是△ABC3边判断(a-c)^2-b^2的值的正负若a,b,c满足a^2+c^2+2b(b-a-c)=0,判断△ABC形状不要图快,我要看明白才给分,我会等的,慢慢
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/08 21:43:38
xUKSA+{\`̅Jzj{brèԢ"WGQJGr/gfETc`~uq&$4J$nщ$(^1|KѻV5vW0at4AG=v8
g7?:l.=IZd}r_{U 6H*2K|ʫelϻsȷYa,"iu6y%98_Oyo_tx u
,"ل,H?'
="ɐ8Kd2)y(ސ{#Oc gZ챍:?^'6}!^#W',
HH-E@Ilǰzz *C[B^qWhTJTҝxx"e裡1E>TU=BDGuvꋰG^cx*LOYG2ǥ -S^=I!181'Eyܘх- (aoBE#Jy :!ADRT`lD*B :94i
je?LSA%ax )&j{
`Hu"W egk,6[hy"piҐ+l)-N|V:<NcYtemo]vADHȝa*6#lA,tPjE&\!}>T"sp{]CPӖ|
sUQz7w[O]ۊV\c Ȳ*S@9>%`I)~iZw;A 4
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
设f(x+y,x-y)=x^2-y^2,则f(x,y)=
若f(x+y,y/x)=x^2-y^2,则F(X,Y)=
已知f(x+y,y/x)=x^2-y^2,则f(x,y)=
x(x-2y)=y(2y-x) ,则y分之x是多少
若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于
若2x=3y,则(x*x+y*y)/x*x=?
填空:x-y/x+y=( )/x^2-y^2
(x-y)2•(y-x)³(x-y)=?
(X,Y) f(x,y)={12y^2,0
12y(x-y)^2-8(x-y)^3=?
已知F(X+Y,X-Y)=X^2*Y+X*Y^2,则F(X,Y)=?
已知x*x+4x+y*y-2y+5=0,则x*x+y*y=?
(x-y) (x-2y)+(x+2y) (x-3y)-2(x-3y) (x-4y)=
3x+y=2 -y/x+y=123x+y=2 (-y/x)+y=12
(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)
(x-4y)(2x+y)=