$\left(3a+2bc\right)\left(9a^2-6a\right)$

$\left(2z^3d^{-2}\right)\left(\frac{1}{4}z^7d\right)\left(15d^4\right)$

$\lim_{x\to-\infty}\left(\frac{2x^2+4x-7}{x^3+3x^2-5}\right)$

$sec\left(2x\right)-cos\left(2x\right)+1$

$2\:>\:3x\:-\:4$

$\int_{0}^{1}\frac{e^{x}-e^{-x}}{2}dx$

$\lim_{x\to\infty}\:\left(1+\frac{11}{x}\right)^{\frac{x}{6}}$