$\frac{\int\left(2x+8\right)}{\left(x+2\right)^2}dx$

$\lim_{x\to0}\sqrt{\frac{x+1}{x-1}}$

$2x+7=31$

$\lim_{x\to+\infty}\left(\frac{4}{x+3}\right)$

$\frac{\left(sinx+cosx\right)}{\left(cosxcscx+\frac{cos^2x}{sin^2x}\right)}$

$\left(5.4\right)\left(1000\right)$

$\left(5m^{y+2}-10\right)\left(2m^{y+2}-8\right)$