$+2-1-6+3-9$

$\lim_{x\to y}\left(\frac{siny^4}{y}\right)$

$4\left(2x+1\right)\left(x+1\right)\left(2x+3\right)\left(x+2\right)$

$\lim_{x\to5}\left(\frac{3x^2-13x-10}{2x^2+7x-15}\right)$

$\int_0^{\sqrt{3}}3x^3\sqrt{x^2+1}dx$

$s^2+5s+36=\frac{-2}{5}$

$\left(5u^{-1}+7w^{-3}\right)\left(5u^{-1}-7w^{-3}\right)$