$x^2-\frac{7}{4}x$

$\frac{dy}{dx}\left(x^2-xy+y^2=1\right)$

$3.5\cdot10^4+7.2\cdot10^5$

$\int\left(\left(3x+2y\right)sin\left(x-4y\right)\right)dx$

$\left(\sec\left(x\right)+\cos\left(x\right)\right)^2$

$\frac{d}{dx}\left(4x\ln\left(5x\right)-4x\right)$

$\frac{2}{7}\cdot28$