$\int\left(56sec\left(7x\right)tan\left(7x\right)\right)dx$

$y=\frac{1}{2}\left(x^2-1\right)arctghx+\frac{1}{2}x$

$\int\frac{-x^2+7x+9}{x^3+2x^2-x-2}dx$

$\int\left(t^2-6\right)dx$

$\left(\left(3y\right)\left(b\right)\right)^5$

$\frac{4x+2}{2\sqrt{5}}$

$\left(-108\right):\left(-9\right)$