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

$\frac{dy}{dx}\:\sqrt{x}+\sqrt{y}=1$

$\frac{\tan\left(x\right)+1}{\sec\left(x\right)+\cot\left(x\right)}$

$\int\frac{x+1}{x^2+3x+2}dx$

$7x<14$

$\left(\ln\left(x+1\right)-\ln\left(x\right)\right)$

$\left(b+3\right)\left(b+11\right)$