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

题目详情
3x2-12x,x2-6x+9,16m5-m,x3y-2x2y2+xy3
▼优质解答
答案和解析
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