铁血丹心曲谱完整版:y=3x+2/x-2
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令人不解的问题
y大于等于2倍根号6减2
X=2+2y/y-3
(x-y)^2×(y-x)^3=???
已知X+Y=-4,求1/2(X+Y)+4(X-Y)-3(X-Y)-3/2(X+Y)-X+Y
若 x/3y = y/2x-5y =6x-15y/x
1/4(x+y)+1/2(x+y)*(x+y)>=x*根号y+y*根号x
已知|Y/X|=3 求 [(X^2+2XY+Y^2)/X^2Y^2][(x-y)/(x-2y)]
规定运算&,使得X&Y=X*X-Y*Y/X*X+Y*Y,则求(-1/2)&(-1/3)
已知,X-Y/X=X/(X-2Y)(Y不等于0)求X/Y的值
(x-y)^3*(x-y)^2*(y-x)
3X(X-Y)+2Y(X-Y)
y=x*x-2x-2