$2\cdot\left(15-2\right)-\left|11-\left(7\cdot3\right)\right|$

$\int\frac{4x-15}{\left(x-2\right)^2}dx$

$\cos\left(x\right)+\cos\left(x\right)\cdot\frac{\sin\left(x\right)^2}{\cos\left(x\right)^2}$

$\left\{\left[3+2-\left(9-7\right)+\left(3+4\right)\right]\right\}$

$2y^2+8y+5$

$-0.05+15.22$

$x^6\ln x-\frac{1}{3}x^3$