问题标题:
3x2-12x,x2-6x+9,16m5-m,x3y-2x2y2+xy3
问题描述:

3x2-12x,x2-6x+9,16m5-m,x3y-2x2y2+xy3

蔡型回答:
  3x2-12x,   =3x(x-4)   x2-6x+9,   =x²-2×x×3+3²   =(x-3)²   16m5-m,   =m(16m的4次方-1)   =m(4m²+1)(4m²-1)   =m(4m²+1)(2m+1)(2m-1)   x3y-2x2y2+xy3   =xy(x²-2xy+y²)   =xy(x-y)²
刘国华回答:
  1/2x2+xy-y2,1/2x2+3xy+y2,1/2x2-xy,加法运算,因式分解
蔡型回答:
  1/2x2+xy-y2+1/2x2+3xy+y2=x²+4xy=x(x+4y)
刘国华回答:
  6xy-(x2-2xy),3a2乘于4ab2,(3ab6x3-9ax5)除于(-3ax3),过程谢谢
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