$$\left(sen\:x\:+\:tang\:x\right)\left(1\:-sen\:x\right)$$

$$-151+412$$

$$51^22^33$$

$$80-13-16-84+20+52-83+60$$

$$\int_0^t\left(bs^2\right)dbs$$

$$\left(2m+3n\right)\left(4m^2-6mn-6n^2\right)$$

$$\int_e^{\infty}\left(x^2\right)dx$$