Question

Answer 1

Bài 13:

a: \(=\dfrac{2x^3+5x+4x^2+10}{2x^2+5}=x+2\)

b: \(=\dfrac{x^3+2x^2-1}{2x^2+x+1}\)

\(=\dfrac{1}{2}\cdot\dfrac{2x^3+4x^2-2}{2x^2+x+1}\)

\(=\dfrac{1}{2}\cdot\dfrac{2x^3+x^2+x+3x^2+1.5x+1.5-2.5x-3.5}{2x^2+x+1}\)

\(=\dfrac{1}{2}\left(x+1.5\right)+\dfrac{1}{2}\cdot\dfrac{-2.5x-3.5}{2x^2+x+1}\)