$2\left(-2-5\right)^2-8$

$-120=-8\left(2r+1\right)$

$\int\:\frac{1}{8}\:cos\:\frac{x}{4}\:dx$

$sin\left(x\right)\cdot2cot\left(x\right)=\sqrt{3}$

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

$\int\:\sqrt[6]{7\cdot\:\:tan\left(6x+2\right)+6}\left(294\cdot\:\:sec\left(6x+2\right)^2\right)dx$

$\left(5+7f\right)^2$