Question

Giúp mình với

Answer 1

\(1,AB=-2x^2y.5xy=-10x^3y^2\\ 2,AB=\dfrac{-2}{3}x^3y.\dfrac{5}{4}xy^5=-\dfrac{5}{6}x^4y^6\\ 3,AB=-2x^2.\dfrac{3}{4}xy.5xy=-\dfrac{15}{2}x^4y^2\\ 4,AB=-2,5x^2y^3.5xy.\dfrac{2}{5}x^2=-5x^5y^4\)

\(5,AB=\left(-2x^2y\right)^2.5xy=4x^4y^2.5xy=20x^5y^3\\ 6,AB=-12x^2y.\left(5x^3y\right)^3=-12x^2y.125x^9y^3=-1500x^{11}y^4\)

Answer 2

1, \(-2x^2y.5xy=-10x^3y^2\)

2, \(-\dfrac{2}{3}x^3y.\dfrac{5}{4}xy^5=-\dfrac{5}{6}x^4y^6\)

3, \(-2x^2.\dfrac{3}{4}xy.5xy=-\dfrac{15}{2}x^4y^2\)

4, \(-\dfrac{5}{2}x^2y^3.5xy.\dfrac{2}{5}x^2=-5x^5y^4\)

5, \(\left(-2x^2y\right)^2.5xy=4x^4y^2.5xy=20x^5y^3\)

6, \(-12x^2y\left(5x^3y\right)^3=-12x^2y.125x^9y^3=-1500x^{11}y^4\)