Question

Thực hiện phép chia:        (đơn thức-đa thức)       
(-x^4+2x-3x^2) : (x-2)

Answer 1

`(-x^4+2x-3x^2):(x-2)`

`=[-x(x^3+3x-2)]:(x-2)`

`=[-x(x^3-2x^2+2x^2-4x+7x-14+12)]:(x-2)`

`={-x[x^2(x-2)+2x(x-2)+7(x-2)]-12x+24-24}:(x-2)`

`=[-x(x-2)(x^2+2x+7)-12(x-2)-24]:(x-2)`

`=-x(x^2+2x+7)-12` và dư `-24`

`=-x^3-2x^2-7x-12` và dư `-24`

Answer 2

Answer 3

\(\dfrac{-x^4-3x^2+2x}{x-2}\)

\(=\dfrac{-x^4+2x^3-2x^3+4x^2-7x^2+14x-12x+24-24}{x-2}\)

\(=-x^3-2x^2-7x-12-\dfrac{24}{x-2}\)