Thực hiện phép chia (x^3 y - 5x^2 y^2 -25 x^4 y^3) : (-5xy)

* Hướng dẫn giải

$\begin{array}{l}\left(10x^{3}y–5x^2{y}^2–25x^4{y}^3\right):\left(-5xy\right)\\ =10x^{3}y:\left(-5xy\right)+\left(–5x^2{y}^2\right):\left(-5xy\right)+\left(–25x^4{y}^3\right):\left(-5xy\right)\\ =-2x^2+xy+5x^3{y}^2\end{array}$

Vậy $\left(10x^{3}y–5x^2{y}^2–25x^4{y}^3\right):\left(-5xy\right)=-2x^2+xy+5x^3{y}^2$