Question

2/3x^4.y^5(5/4x^2.y^3)+5/3x^2.y^3(-9/10x^4.y^5)

Answer 1

\(=\dfrac{5}{6}x^6y^8-\dfrac{3}{2}x^6y^8=-\dfrac{2}{3}x^6y^8\)

Answer 2

\(\dfrac{2}{3}x^4y^5\left(\dfrac{5}{4}x^2y^3\right)+\dfrac{5}{3}x^2y^3\left(\dfrac{-9}{10}x^4y^5\right)\\ =\dfrac{5}{6}x^6y^8-\dfrac{3}{2}x^6y^8\\ =-\dfrac{2}{3}x^6y^8\)

Answer 3

Y-2/9=4/45