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b=5^4-(2•11)^2-11^2
repede, dau coroana


Răspuns :

B=5⁴-(2*11)²-11²
B=625-2² *11²-11²
B=625-4*11²(1-1)
B=625-4*(11²)⁰
B=625-4*1
B=621