(5xy+2xy-10xy):5xy
= xy+\(\dfrac{2}{5}\) -2y2
(5xy+2xy-10xy):5xy
= x+ \(\dfrac{2}{5}\) -2y2
( 5x3y2 + 2x2y2 - 10x2y4) : 5x2y2
Ta có : 5x2y2( x + \(\dfrac{2}{5}\)- 2y2) : 5x2y2
Vậy , thương là :R = x + \(\dfrac{2}{5}\)- 2y2
\(\left(5x^3y^2+2x^2y^2-10x^2y^4\right):5x^2y^2\)
\(=5x^3y^2:5x^2y^2+2x^2y^2:5x^2y^2-10x^2y^4:5x^2y^2\)
\(=x+\dfrac{2}{5}-2y^2\)