Làm tính chia :
a) \(5x^2y^4:10x^2y\)
b) \(\dfrac{3}{4}x^3y^3 : (-\dfrac{1}{2}x^2y^2)\)
c) \((-xy)^{10}:(-xy)^5\)
a) \(5x^2y^4:10x^2y= \dfrac{5}{10}.\dfrac{x^2}{x^2}.\dfrac{y^4}{y}=\dfrac{1}{2}y^3\)
b) \(\dfrac{3}{4}x^3y^3 : (-\dfrac{1}{2}x^2y^2)=-\dfrac{3}{4}.\dfrac{2}{1}.\dfrac{x^3}{x^2}.\dfrac{y^3}{y^2}=-\dfrac{3}{2}xy\)
c) \((-xy)^{10}:(-xy)^5= (-xy)^5\)
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