因式分解:(1)a5-a (2)xy2-2xy+x
问题描述:
因式分解:(1)a5-a (2)xy2-2xy+x
xiexiele
答
(1)a^5-a
=a(a^4-1)
=a(a^2+1)(a^2-1)
=a(a^2+1)(a+1)(a-1)
(2)xy2-2xy+x
=x(y^2-2y+1)
=x(y-1)^2