填空:x^2-2xy+y^2=(______)(x-y)
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填空:x^2-2xy+y^2=(______)(x-y)填空:x^2-2xy+y^2=(______)(x-y)填空:x^2-2xy+y^2=(______)(x-y)x-yx-y
填空:x^2-2xy+y^2=(______)(x-y)
填空:x^2-2xy+y^2=(______)(x-y)
填空:x^2-2xy+y^2=(______)(x-y)
x-y
x-y
(5x-____)^2=____-10xy+y^2
(_____)-10xy+y^2=(5x-____)
x-2y²+xy=2y²-xy-()填空
当m=____时,代数式x^-3mxy-3y^+2xy中不含xy项
填空 (x^2-y^2)(x+y)^2=(x-y)(____)^3
①求xy-y+x=3的正整数解 ②2xy+y+x=83,则x+y=____或____
已知x>0,y>0且3x+2y-2xy=0,则xy的最小值是____
|a-b| +|a|=_____(化简)x-xy=20,xy-y=-10,x-y=____,x+y-2xy=_____.
计算:(3x平方y-xy平方+1/2xy)÷(-1/2xy)=____.说明理由谢谢了
x的平方+y的平方= -2xy= +2xy.填空,谁会?
在二元一次方程x-2y=3中,若xy互为相反数,则x=____,y=____?
整式乘法练习题填空题1.(x+4)(-x+4)=____.2.(x+3y)(___)=9y²-x²3.(-m-n)(___)=m²-n²4.-(2x²+3y)(3y-2x²)=____.5.(a-b)(a+b)(a²+b²)=____6.(___-2x)(___-2x)=4x²-25y²7.(xy-z)(z+xy)=____.8.(¼x+y
_____/xy=2y/2xy² 填空 分式
填空:x^2-2xy+y^2=(______)(x-y)
若实数x、y满足x^2+y^2+2xy+x-y=0,则x(max)=____,y(min)=____.
若M=x/x的平方-xy,N=y/y的平方-xy,P=2/y-x,则M-N+P=____.
填空,√x^4y²(x²+2xy+y²)=x>0,y>0
x-2π/3中有____项,字母x的系数是____,常数项是___.已知:x^2+xy=1,xy-y^2=4,则x^2+2xy-y^2=_____