多项式3x^m*y^(n+2)-1/7*x^(m-1)*y^(n+1)是_____________与__________的积.应该要填单项式或多项式吧~再=几天额~

多项式3x^m*y^(n+2)-1/7*x^(m-1)*y^(n+1)是_____________与__________的积.应该要填单项式或多项式吧~再=几天额~
多项式3x^m*y^(n+2)-1/7*x^(m-1)*y^(n+1)是_____________与__________的积.
应该要填单项式或多项式吧~再=几天额~

多项式3x^m*y^(n+2)-1/7*x^(m-1)*y^(n+1)是_____________与__________的积.应该要填单项式或多项式吧~再=几天额~
提公因式就好了啊
公因式为x^(m-1)×y^(n+1)
3x^m*y^(n+2)-1/7*x^(m-1)*y^(n+1)=x^(m-1)×y^(n+1)[3xy-1/7]
多项式3x^m*y^(n+2)-1/7*x^(m-1)*y^(n+1)是__x^(m-1)×y^(n+1)_与_[3xy-1/7]_的积.
PS：楼上的缺括号

X^(m-1)*Y(n+1) 3xy-1/7