Question

Giúp mk câu b ạ

Answer 1

\(A=\dfrac{1}{3}xy\left(\dfrac{4}{25}x^2y^4z^2\right)=\dfrac{4}{75}x^3y^5z^2\)

\(B=\dfrac{4}{7}xy^2z.\dfrac{1}{2}yz=\dfrac{2}{7}xy^3z^2\)

\(C=\dfrac{4}{9}x^2y^2.25yz^3\left(\dfrac{1}{16y^2z^2}\right)=\dfrac{\dfrac{25}{36}x^2y^3z^3}{16y^2z^2}=\dfrac{25x^2yz}{576}\)

\(D=-4y\left(x^3y^3\right).\dfrac{1}{8}\left(-x^5\right)=\dfrac{1}{2}x^8y^4\)