(2x+y)2xy-3x(2x+y)=
来源:百度知道 编辑:UC知道 时间:2024/06/16 10:31:53
还有15c(a-b)*2-10(b-a)*3=
分解因式(x+y+z)(x-y+z)-(y-x+z)(y-x-z)
x*2(a-x)(a-y)-y*2(x-a)(y-a)
分解因式(x+y+z)(x-y+z)-(y-x+z)(y-x-z)
x*2(a-x)(a-y)-y*2(x-a)(y-a)
1.(2x+y)2xy-3x(2x+y)
=x(2x+y)(2y-3)
2.15c(a-b)*2-10(b-a)*3
=5(a-b)²[3c-2(b-a)]
=5(a-b)²(3c-2b+2a)
3.(x+y+z)(x-y+z)-(y-x+z)(y-x-z)
=(x+z)²-y²-(y-x)²+z²
=[(x+z)²-(y-x)²]-(y²-z²)
=(y+z)(2x-y+z)-(y+z)(y-z)
=(y+z)(2x-y+z-y+z)
=(y+z)(2x-2y+2z)
=2(y+z)(x-y+z)
4.x*2(a-x)(a-y)-y*2(x-a)(y-a)
=(x-a)(y-a)(x²-y²)
=(x-a)(y-a)(x+y)(x-y).
2xy-3x
x(x-y)(X^2-xy-y^2)-x^2y(y-x)=多少
因式分解 x^2(x+y)(x-y)-xy(x+y)(y-x)
xy/x+y=3求2x-3xy+2y/3xy-x-y的值
x^2-3y^2=2xy, x+2y/x-y=?
数学题(x+y+3)(x^2+y^2+2xy-3x-3y+9)
f(x,y)=x^2+xy+y^2-3x-6y的极值
x^2y-x+xy=x(xy-1+y)能不能分解因式成x(xy-1+y)?
已知x,y是实数,且|x|=y,|xy|+xy=0,求证:|x|+|-2y|-|3y-2x|=2x
计算(x-y)(x^2+xy+y^2)得
计算:(X+Y)(X^2-XY+Y^2)