$2534-146$

$\frac{dy}{dx}=rx\left(1-\frac{x}{k}\right)$

$\left(xy+2\right)\left(xy+4\right)$

$\int_1^{\infty}\left(\frac{\ln\left(x\right)}{\left(1+x^2\right)^2}\right)dx$

$2.2\left(4.7x\:+\:1.5y\right)-3.4\left(5x\:-\:2.7y\right)-\left(6.2x\:-\:7y\right)$

$\left(14w^4-4\right)\left(14w^4-48\:\right)$

$6m+5-m-5m+12-17$