$x\frac{dy}{dx}=y+3x^2-2x$

$77x+49y=553$

$\frac{dy}{dx}-3x=\cos\left(x\right)$

$\int x\left(\sin^3\left(4x\right)\right)dx$

$\sqrt[32]{1+80\left(3^4+1\right)\left(3^8+1\right)\left(3^{16}+1\right)}$

$\frac{1+\cos\left(x\right)}{1-\sin\left(x\right)}=\left(\tan\left(x\right)\right)^2\left(\frac{1+\sin\left(x\right)}{1-\cos\left(x\right)}\right)$

$-20\cdot\left(-289\right)\cdot248\cdot\left(-1\right)\cdot2$