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

$a+\frac{7}{4}-2=\frac{11}{4}$

$\left(x^2+\sqrt{7}\right)^2$

$-49a^{10}^n-\frac{h^{12x}}{81}$

$\:\int\:\frac{9x+3}{x^3+3x^2-4x}dx$

$c\left(0.0\right)$

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