Question

求详细过程答案

Answer 1

(1)解：原式=(a-b)(m+n)
(2)解：原式=x(a-b)-y(a-b)=(a-b)(x-y)
(3)解：原式=ab(m-2)-b(m-2)=(m-2)(ab-b)=b(m-2)(a-1)
(4)解：原式=2(x-y)^2+4(x-y)=2(x-y)[(x-y)+2]=2(x-y)(x-y+2)
(5)解：原式=m(x-y)^2+m(x-y)=m(x-y)[(x-y)+m]=m(x-y)(x-y+m)
(6)解：原式=n(m-n)^3-m(n-m)^2=(m-n)^2[n(m-n)-m]=(m-n)^2(nm-n^2-m)
(7)解：原式=(a^2+b^2)(mn+mn^2)=mn(a^2+b^2)(n+1)
(8)解：原式=x(x+y)(x-y)[1-(x+y)]=-x(x+y)(x-y)[(x+y)-1]=-x(x+y)(x-y)(x+y-1)
(9)解：原式=x(m-n)^3-x^2(m-n)^2=x(m-n)^2[(m-n)-x]=x(m-n)^2(m-n-x)
第10题看不清题目最后是几次方。

追问

虽然已经不需要了不过还是蟹蟹