$\frac{125x^3-343y^3}{5x+7y}$

$\lim_{x\to\infty}\left(tan\left(\left(\frac{2x\pi}{1+8x}\right)\right)\right)$

$732+\left(-485\right)$

$\frac{d}{dx}\left(e^{x^2}+\ln\left(y\right)=0\right)$

$\int_1^{\infty}\left(\frac{4x}{2x+1}\right)dx$

$\frac{10}{7}x\frac{4}{7}$

$\sqrt{169}-24$