$\left(2x+4y\right)^2$

$\frac{\cot\left(x\right)}{1+\csc\left(x\right)}=\frac{1-\csc\left(x\right)}{\cot\left(x\right)}$

$\frac{9}{4}^{-\frac{3}{2}}$

$-7x-2y-b+2x+b-17y$

$x^2+\frac{x^2}{9}$

$\int\frac{6x-2}{3x^2-2x}\:dx$

$\tan\left(x\right)=\sec^3\left(x\right)\left(\sin\left(x\right)\right)-\left(\sin^3\left(x\right)\right)$