Rút gọn biểu thức: a) (5x^3y^2 – 4x^2y^3) : 2x^2y^2 – (3x^2y – 6xy^2) : 3xy;

a) (5x³y² – 4x²y³) : 2x²y² – (3x²y – 6xy²) : 3xy

= 5x³y²: 2x²y²– 4x²y³: 2x²y² ‒ 3x²y: 3xy + 6xy²: 3xy

= 2,5x ‒ 2y ‒ x + 2y

=(2,5x ‒ x) + (–2y + 2y)

= 1,5x.