$\int\left(12x+5\right)\left(e^{6x^2+5x-2}\right)dx$

$x^3-4x^2+8-x^3+4x^2-3$

$\left|-56\right|-\left|-89\right|+\left|-65\right|-\left|-16\right|$

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

$5-20\cdot10^{-6}<2$

$\lim_{x\to\infty}\left(\frac{\sqrt{x-1}}{\sqrt{x+3}-2}\right)$

$d y - ( y - 8 ) ^ { 2 } d x = 0$