(x+y)^2-10x-10y+25=(x+y)^-10( )+25
已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y
(x+2y)二次方-10(x+2y)+25
(x+y)(x+y+10)+25=0 x-y=3.求x,y的值
(x+y)的平方-10x-10y+25=(x+y)-10( )+25
实数x,y满足|2分之5x-y|+y²-10y+25=0,求代数式1-x-2y分之x-y÷x平方-y平方分之x
(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuai
y满足x-y+2≥0,x+y-4≥0,2x-y-5≤0 求X^2+Y^2-10Y+25的最小值
已知/x/+x+y=10,/y/+x-y=12.求x+y的值
10道因式分解.快.1.x^2-y^2+2y-12.x^2-10xy+25y^2-6x+30y+83.x(x-4)(x-
X+Y=7(100X+Y)-(10Y+X)=(10Y+X)-(10X+Y)
已知2x-y=10,求式子[(x^2+y^2)-(x-y)^2+2y(x-y)]/4y (4xy-2y²)/4
25(x-y)的平方+10(y-x)+1因式分解