$4\left(x+2\right)^2\:-1$

$\ln\left(y\right)=\ln\left(\sin\left(3x\right)^{1+7x}\right)$

$\frac{dy}{dx}=\left(x+2\right)\left(3-y\right)$

$\int\frac{2x^{2}+5x-9}{x-2}dx$

$\left(x^2+x^3\right)\left(x^4-x^2y^3+y^6\right)$

$\left(4a^2b^3\right)\left(-7a^3b^4\right)\left(5abc\right)$

$3\int\sin^2\left(3x\right)dx$