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

$2x-x\left(-5x^2-8x-10\right)5x$

$\frac{x-1}{3}+\frac{x}{6}\ge\frac{2x+2}{9}$

$\frac{1}{4}a^4-2b^2$

$\frac{dy}{dx}=100+700\sqrt{x}$

$\frac{x^4-x^3+7x^2-15}{x^2+2}$

$\left(-148\right)+\left(-315+\right)\left(-218\right)$