$$\int\left(t-y\right)tan\left(t\right)+1dx$$

$$\int\left(9x^2\cdot\left(x^3+3\right)^9\right)dx$$

$$\frac{8x+40}{63+14}\cdot\frac{9x+2}{2x+10}$$

$$\left(-4\cdot8\right)\left(-30\right)$$

$$cot\:x+tan\:x\:=cos\:x\:sec\:x$$

$$3y^2-12$$

$$\left(+7\right)\left(-27\right)\left(+13\right)$$