$\left(x^2-2\right)\left(x^3+2\right)-\left(x^2-2\right)^2$
$x\left(y+1\right)-\:2x\:\left(1+y\right)+y+1\:$
$3m^{2}n+2mn-n:3mn-4n-2\text{restar}3m^{2}n+5mn$
$\frac{dx}{dt}=x+e^{2-t}\:-\frac{5}{2}$
$-4-4\cdot8$
$x^2+17x=0$
$\int\left(49+x^2\right)^{-3}dx$
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