Question

Làm tính chia :

a) \(\left(25x^2-5x^4+10x^2\right):5x^2\)

b) \(\left(15x^3y^2-6x^2y-3x^2y^2\right):6x^2y\)

Answer 1

a) (25x⁵ – 5x⁴ + 10x²) : 5x² = (25x⁵ : 5x² ) - (5x⁴ : 5x² ) + (10x² : 5x² )

= 5x³ – x² + 2

b) (15x³y² – 6x²y – 3x²y²) : 6x²y

= (15x³y² : 6x²y) + (– 6x²y : 6x²y) + (– 3x²y² : 6x²y)

= \(\dfrac{15}{6}\)xy - 1 - \(\dfrac{3}{6}\)y = \(\dfrac{5}{2}\)xy - \(\dfrac{1}{2}\)y - 1.