Răspuns:
[tex]1^2=1\\2^2=4\\3^2=9\\4^2=16\\5^2=25\\6^2=36\\7^2=49\\8^2=64\\9^2=81\\10^2=100\\11^2=121\\12^2=144\\13^2=169\\14^2=196\\15^2=225\\16^2=256\\17^2=289\\18^2=324\\19^2=361\\20^2=400\\21^2=441\\22^2=484\\23^2=529\\24^2=576\\25^2=625\\26^2=676\\27^2=729\\28^2=784\\29^2=841\\30^2=900\\[/tex]
Explicație:
Pătratul perfect este orice număr care se poate scrie ca puterea a doua a altui număr natural.
