作业帮32-y=x-5 y-x=x-5 咋解?
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32-y=x-5 y-x=x-5 咋解?
32-y=x-5 y-x=x-5 咋解?
32-y=x-5 y-x=x-5 咋解?
x＝37－y
（x+y-5)*（x+y-5)+（x-y+3)=0 x*x-y*y
已知:3x-5y=0,求x/y,x-y/y,x-y/x
x+y=5; x^y+y^x=17
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
若(X×X+Y×Y)(X×X+Y×Y-5)=36,则X×X+Y×Y＝
y-x=x-5
(X-Y)(X+Y)=5 能解么
5x-4y(y-x)=?
y=|-x.x+4x+5|
Y={X (-5
Y={X (-5
x*x+2x+y*y-4y+5=0 x= y=
（5x+3y)(3y-5x)-(4x-y)(4y+x)=
4(x-y)-3(x-y)=9 5(x-y)+2(x-y)=11
3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27
解方程组(x+y)(x-2y)=-5 (x-y)(x+2y)=7
{6(x-y)-7(x+y)=21 {2(x-y)-5(x+y)=-1
x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2