因式分解2(m+1)(m-1)-4(m+1)² xy²-2xy+x
问题描述:
因式分解2(m+1)(m-1)-4(m+1)² xy²-2xy+x
快
答
解
2(m+1)(m-1)-4(m+1)^2
=2(m+1)[(m-1)-2(m+1)]
=2(m+1)(-m-3)
=-2(m+1)(m+3)
xy^2-2xy+x
=x(y^2-2y+1)
=x(y-1)^2