'因式分解x(m-x)(m-y)-m(x-m)(y-m)

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'因式分解x(m-x)(m-y)-m(x-m)(y-m)
'因式分解x(m-x)(m-y)-m(x-m)(y-m)

'因式分解x(m-x)(m-y)-m(x-m)(y-m)
x(m-x)(m-y)-m(x-m)(y-m)
=x(m-x)(m-y)-m(m-x)(m-y)
=-(m-x)²(m-y)

楼主你好!

x(m-x)(m-y)-m(x-m)(y-m)
=x(m-x)(m-y)-m(m-x)(m-y)
=(x-m)(m-x)(m-y)
=(y-m)(x-m)^2

x(m-x)(m-y)-m(x-m)(y-m)
=x(m-x)(m-y)+m(m-x)(m-y) 相反数变形 负号变正号
=(x+m)(m-x)(m-y)