$x^2+6x+12\ge0$

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

$\log7x=y$

$\frac{3x^4-3x^2+2x-1}{x-1}$

$\left(csca+1\right)\left(csca-1\right)=cot^2a$

$\log_{2}\left(\sqrt[3]{x}\right)=\frac{1}{3}\log_{2}\left(\frac{1}{x}\right)+1$

$\left(7a^2+2b\right)\left(7a^2+2b\right)$