$$n^2\:+\:4n\:-\:60$$

$$sen^2\left(x\right).\cot^2\left(x\right)=1-sen^2\left(x\right)$$

$$\int_0^{\frac{\pi}{4}}\left(ycos\left(xy\right)\right)dy$$

$$3x^{3}+5xy^{2}-25x$$

$$\cot\left(w\right)=-1.54$$

$$\int\frac{3}{\left(x+12\right)^3}dx$$

$$( 2 b + 2 ) - 3 ( 7 b - 4 )$$