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Comparati numerele
a)
[tex] {6}^{2} si (2 \times 3) { }^{5} [/tex]
b)
[tex] {3}^{9} si {5}^{6} [/tex]
c)
[tex]( {5}^{3} \div 5) {}^{6} si (25 \times {5}^{2} ) {}^{3} [/tex]