不定積分の基本

問題次の不定積分を求めよ。$${\small (1)}~\int (x^4-5x^3)dx$$$${\small (2)}~\int \sqrt[{\large 3}]{x^2}dx$$$${\small (3)}~\int \frac{(2x-1)^2}{x^2} dx$$$${\small (4)}~\int \frac{3x+2}{\sqrt{x}} dx$$