$\frac{10}{10}\cdot450.000$

$\frac{x+2}{x+4}=\frac{x-2}{x+2}$

$\lim_{x\to\infty}\left(1-\frac{1}{4x}\right)^{5x}$

$\frac{d}{dx}\sqrt[3]{-2x^4+5}$

$\frac{6}{7}x-15<-\frac{1}{2}\cdot\left(-3x+9\right)$

$\left(2x-7\right)\left(5x+3\right)$

$sec\left(-\pi\right)+csc\left(-\frac{\pi}{2}\right)$