$\left(12+10c\right)\left(12-10c\right)$

$\int\frac{x^3-6x+2}{x^3\left(x+2\right)\left(x^2+5\right)}dx$

$\frac{1}{4}\left(x^2+x\right)$

$x'=3x$

$3ay-4by-8bx+6ax$

$\lim_{x\to\left(\frac{\pi}{4}\right)}\left(5\tan\left(x\right)^{\tan\left(2x\right)}\right)$

$37+12,35$