$68-75+32-95-\left(-56\right)-\left(32-15-54\right)$

$4\left(6p\:+\:2q\:-\:2\right)$

$\int\left(x^7\sqrt{3x^4+2}\right)dx$

$y^8-2y^42^3+a^6$

$2\left(\log\left(2x\right)-\:\log\left(y\right)\right)-\:\left(\log\left(3\right)+\:2\:\log\left(5\right)\right)$

$\left(-35\right).\left(5+2\right)+\left(-4\right).9-\left(7-2.5\right)$

$\lim_{x\to0}\left(\frac{\cos\left(x+\frac{\pi}{2}\right)}{\sin\left(x\right)}\right)$