-3x2+2x2y+xy2
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-3x2+2x2y+xy2
-3x2+2x2y+xy2
-3x2+2x2y+xy2
-3x2+2x2y+xy2
=-3x²+3x²y-x²y+xy²
=3x²(y-1)+xy(y-1)
=(3x²+xy)(y-1)
=x(3x+y)(y-1)
-3x2+2x2y+xy2
3x2y+xy2-[2xy2-4x2y+(x2y-2xy2)]
5xy2-【3xy2-(4xy2-2x2y)】+2x2y】+2x2y-xy2 化简,再求值
-3x2y+2x2y+3xy2-2xy2
计算:3xy(x2y-xy2+xy)-xy2(2x2-3xy+2x)因式分解
化简-x2-3x+2x2+4x.xy2-2/3x2y-xy2/2+2x2y.2a-1/2ab-(a2-ab)
3(3x2y-xy2+3)-2(2x2y+xy2-2)化简 一个多项式加上5x2+3x-2的二倍得1-3x2+x,求这3(3x2y-xy2+3)-2(2x2y+xy2-2)化简 一个多项式加上5x2+3x-2的二倍得1-3x2+x,求这个多项式.1.3(3x2y-xy2+3)-2(2x2y+xy2-2)化简
-2x2y(-2xy2)2+(2xy)3×( xy2)
(x2y)3 × (-xy2)3
求[2(x2y-xy2)+xy(2xy-x2)]÷x2y注:x2 xy2 x2y中的2是平方,我不会打平方的符号
已知(x+3)2+▕x-y+10▏=0求代数式5x2y-【2x2-(3xy-xy2)-3x2】-2xy2-y2的值.
已知(x+3)2+▕x-y+10▏=0求代数式5x2y-【2x2-(3xy-xy2)-3x2】-2xy2-y2的值.
化简:5(3x2y-xy2) * (xy2+3x2y)
x2+x2y-xy2-y3得值
x3-2x2y+xy2-x
因式分解:x3-2x2y+xy2
当x=-1,y=1时求代数式2x2y-(5xy2-3x2y)-x2的值字母后面的2是平方
已知x+y=8,xy=12,求(1)x2y+xy2(2)x2-xy+y2(3)x-y