$$\int_{\sqrt{3}}^{\infty}\frac{1}{1+x^2}dx$$

$$15t\:+\:-5t\:=\:-10$$

$$\int\left(x^4-3x^{\frac{3}{2}}+\frac{7}{\sqrt{x}}+5\right)dx$$

$$x^2+14x+9$$

$$-49+7\cdot\left(-5\right)$$

$$\frac{\left(-2\right)}{\left(-2\right)}$$

$$\frac{d}{dx}\log_{31}\left(2x-4\right)$$