$7\left(x+4\right)-5\left(x+6\right)+6$

$\frac{dy}{dx}=\frac{2y+3}{4x+5}^4$

$4x^3+3x^2-6x=0$

$\left(-15\right).2-\frac{\left(-16\right)}{\left(-8\right)}$

$\int\frac{2\cos\left(\ln\left(x\right)\right)}{x}dx$

$\left(2+x^4\right)\frac{dy}{dx}=\frac{x^3}{y}$

$205-\left(45-5\right)$