$\lim_{x\to\infty}\left(\frac{\left(2^x+3^x\right)}{\pi^x}\right)$

$\lim_{x\to0}\frac{e^x}{x^3}$

$\int\frac{\left(2\right)}{\sqrt{x^2-4}}dx$

$\left(x^2+1\right)^{\frac{1}{2}}y'=xy^3$

$\frac{4-\sin^2\left(x\right)-3\sin\left(x\right)}{\cos^2\left(x\right)}$

$\left(x+y\right)\left(x-y\right)=y\left(x-y\right)$

$-\frac{100}{4}$