$5\:\left(-4+1\right)-3\left(-9-7\right)-\left(16-9+2\right)$

$\int\frac{3x^2+10x+24}{\left(x+1\right)\left(x^2+16\right)}dx$

$\left(14a^4b^2c^2\right)\left(5a^3b^2c\right)$

$\left(-2\right)\left(-3\right)\left(-3\right)\left(2\right)\left(-3\right)\left(1\right)$

$-5\left(6\right)$

$x-2\:\cdot3x$

$\int\frac{2}{x\left(x-1\right)\left(x+1\right)}dx$