$-2+2\left(5-6x\right)$

$\frac{dy}{dx}=y^{2\:}sinx;\:y\left(\pi\right)=-\frac{1}{2}$

$3xy^{2\:}+4x^3y^2+6xy$

$0.04-9x^2$

$\int\frac{\left(a\cdot\:sin\:z\right)^2}{\sqrt{a^2-\left(a\cdot sin\:z\right)^2}}dx$

$\frac{\tan y}{sec\:y+1}=\frac{sec\:y-1}{tan\:y}$

$\left(2x+1\right)^3-\left(8x+3\right)^2$