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(5⁷+5⁸+5⁹):5⁶ Trebuie calculat folosind regulile de calcul VA ROOOOG REPEEEDEE

Răspuns :

•5^7+5^8+5^9=2421875
•2421875:5^6=155
5^7 (1+5^1+5^2):5^6=
5^7 (1+5+25):5^6=
5^7×31:5^6=
5×31=155