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Studiati daca 3^7+3^6 este patrat perfect!!!
Dau coroana


Răspuns :

3⁷+3⁶=3⁶(3+1)=3⁶·4=(3³)²·2²=27²·2²=(27·2)²
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3^7+3^6 este patrat perfect?

3^7+3^6=3^6*3+3^6=3^6*(3+1)=3^6*4=3^6*2^2=(3^3)^2*2^2=27^2*2^2=(27^2)^2=54² - care este patrat perfect