Question

giúp mình với ạ

Answer 1

a: \(=\dfrac{1}{2}x^4y^3z\)

b: \(=x^3y^2\left(-5+10-\dfrac{3}{4}-1\right)=\dfrac{13}{4}x^3y^2\)

c: \(=x^2y\left(\dfrac{1}{3}-\dfrac{1}{3}\right)+xy^2-\dfrac{1}{2}xy^2-4xy=\dfrac{1}{2}xy^2-4xy\)