$\frac{16+11y-x^{2}}{\left(x^{2}-1\right)\left(x^{2}+3x+3\right)}$

$\int\frac{1}{p\left(1-\frac{p}{300}\right)}dp$

$-7b-1b$

$\frac{dy}{dx}=sin\left(x\right)cos\left(x\right)$

$\frac{dy}{dx}=21y-126xy-162x+27$

$cot^2x-tan^2x=sec^2\left(csc^2x-2\right)$

$x^2+2x+4=292$