Răspunsuri

2014-04-16T13:04:51+03:00
6/79  * (54+25/30) * (1/2- 11/2) +( √13)²(-5)²
6/79 * 79/30 * (-10/2)  + 13+25
se simplifica si ne da
-25 +13+25=13∈N