$171-1-211$

$\frac{dy}{dx}=e^{3x-2y},y\left(0\right)=0$

$-\sqrt{16}+\sqrt{169}$

$3c-6c$

$\left(1+\tan\left(x\right)\right)^2-\sec^2\left(x\right)=2\tan\left(x\right)$

$\left(3x^4+7x^3+9x^2-x-6\right)$

$\left[\left(-8\right)+5\cdot2-4:\left(-2\right)\right]\cdot\left(-1\right)$