$tag\left(x\right)sen\left(x\right)^2+\cot\left(x\right)\cos\left(x\right)^2+2\sin\left(x\right)\cos\left(x\right)$

$32-5\cdot3+2-7\left(-\frac{3}{21}\right)-14\cdot\frac{5}{-7}$

$2x^2+40x+2-x^2+5x+12$

$\sec\left(x\right)=5.87690$

$\frac{20x^3-12x^2-23x-14}{5x+2}$

$36a^{10}-4x^2$

$-28\cdot6$