$\frac{dy}{dx}=\frac{2+\sqrt{x}}{7+\sqrt{y}}$

$-3000+2029$

$\frac{cos\left(8x\right)-cos\left(4x\right)}{sin\left(8x\right)-sin\left(4x\right)}$

$\frac{\tan^2\left(x\right)^{\cos\:\left(x\right)}}{\sin^2\left(x\right)}$

$\frac{4x^2-17x-15}{x^2-25}$

$1\frac{\tan^2\left(x\right)}{1+\sec\left(x\right)}=\sec\left(x\right)$

$x^4-12x^2-36$