$-0.34^2+\frac{\cos\left(x\right)}{1+\sin\left(x\right)}=1$

$\lim_{x\to\infty}\:\left(_{\frac{7x^2}{e^x}}\right)$

$mv-mz$

$\int\left(2x+4\right)e^xdx$

$\frac{-2}{5}=\frac{x}{35}$

$\left(4x^2+6\right)\cdot\left(2x-5\right)$

$\lim\:_{x\to\:-\infty\:}\left(\sqrt{x^2+5x+11}-\sqrt{x^2-3x}\right)$