Question

\(a.\dfrac{2}{a}x^2y^3z\left(-x^3yz\right)\)               (a,b là hằng số)

\(b.-ax\left(xy^3\right)\dfrac{1}{4}\left(-by\right)^3\)           (a,b là hằng số)

Answer 1

a: \(=-\dfrac{2}{a}\cdot x^2\cdot x^3\cdot y^3\cdot y\cdot z^2=-\dfrac{2}{a}x^5y^4z^2\)

b: \(=-a\cdot\dfrac{1}{4}\cdot\left(-b\right)^3\cdot x\cdot xy^3\cdot y^3=\dfrac{1}{4}ab^3x^2y^6\)

Answer 2

a, \(=\dfrac{-2x^5y^3z^2}{a}\)

b, \(=-\dfrac{xa\left(xy^3\right).1\left(-b^3y^3\right)}{4}=\dfrac{xa\left(b^3xy^6\right)}{4}=\dfrac{x^2ab^3y^6}{4}\)