$\left(\tan\theta-\sec\theta\right)^{2}=\frac{\left(1-\sen\theta\right)}{\left(1+\sen\theta\right)}$

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

$920\cdot0\cdot11$

$8^{\left(\left(-12\right)+\left(-7\right)\right)+1}$

$7+2\ln\left(x\right)=11$

$\frac{dy}{dx}\left(\sqrt{xy}=x^8y+78\right)$

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