$\left(-2x^3yz\right)\left(5x^3y^4\right)\left(-\frac{2}{3}x^3z^{-3}\right)$

$\frac{18x^3+24x^2+20x+11}{6x+4}$

$x^2+7x-8=0$

$f\left(x\right)=\sqrt[3]{\left(x+1\right)^2}\cdot\sqrt[4]{\left(x-1\right)^3}$

$sin^2x+sinx=\frac{3}{4}$

$11+3x>11$

$\frac{dy}{dx}\:+\frac{2y}{300+x}=6\:$