$sinx=-\frac{2}{3}$

$17\sin\left(x\right)+15=0$

$2,82\cdot745$

$\left(-4\right)+\left(-6\right)+\left(5\right)-\left(-4\right)-\left(9\right)+\left(-8\right)$

$\int\left(\frac{9}{25x^2-30x+34}\right)dx$

$\lim_{x\to-\infty}\left(\sqrt{x^2+1}-\sqrt{x^2-1}\right)$

$x^{-n}$