m(2x+y)²-m(x+2y)²
3m(x-y)-2(y-x)²因式分解
已知(2x)/(x²-y²)÷m=(1)/(x-y),求m
已知2x/x²-y²÷M=1/y-x,求m
因式分解m²+2m(m-n)+(m-n)²,16-8(x-y)+(x-y)²
已知集合M={(x,y)ly=2x+m,m属于R},集合N={(x,y)lx²+y²+2x+2y-3
若x²+4y²=(x-2y)²+M,则M=?
设(x+2y)²=(x-2y)²+M,则M等于
计算:(y-x)^3(x-y)^m-(x-y)^m+2(y-x)
(x+y)(m+n)2-(x+y)(m+n)2
若M/x²-y²-x-y/x+y=2xy-y²/x²-y²求M的值
若m/x²-y²=2xy-y²/x²-y²+x-y/x+y,则m的值为
已知二次函数y=-x²+2(m-1)x+2m-m²