$22^2-3-13+45$
$\int arcosx\:dx$
$m^2+24m=0$
$si\:\left(x+y\right)^2=144;\:xy=22,\:calcula\:x^2+y^2$
$-32-15-7$
$\frac{\left(x\:+\:y\right)\cdot16}{2}=\:264$
$\int x\sqrt{x^2-12}dx$
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