Bài 1:
a: \(=\dfrac{4x^3-6x^2+6x^2-9x-10x+15}{2x-3}\)
\(=2x^2+3x-5\)
b: \(=\dfrac{5x^4+5x^3+4x^3+4x^2-6x^2-6x+2x+2-10}{x+1}\)
\(=5x^3+4x^2-6x+2-\dfrac{10}{x+1}\)
c: \(=\dfrac{5x^3+10x^2+4x^2+8x-5x-10+11}{x+2}\)
\(=5x^2+4x-5+\dfrac{11}{x+2}\)
d: \(=\dfrac{\left(x+1\right)^3}{x+1}=\left(x+1\right)^2\)