$\left(5k-10\right).-9$

$\int3x\sin\left(2-5x\right)dx$

$2x\cdot2x^3$

$\lim_{x\to\infty}\left(\frac{3x+1}{x}\right)$

$\int\frac{x\left(x^4+5\sqrt[3]{x}-3x\sqrt{x}-2\right)}{4x}dx$

$\left(x^{\frac{1}{3}}-x\right)^3$

$\lim_{x\to1}\left(\frac{3}{x^3-1}-\frac{1}{x-1}\right)$