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(5^7+5^8+5^9):5^6 Vă rog!

Răspuns :

pai desfaci paranteza si da 5+5^2+5^3=5+25+125=155 unde nu intelegi imi spui
(5⁷+5⁸+5⁹):5⁶=
5⁷×(1+5+5²):5⁶=5×(1+5+5²)=5×(31)=155

(5⁷:5⁶) +(5⁸:5⁶)+(5⁹:5⁶)=5⁷⁻⁶+5⁸⁻⁶+5⁹⁻⁶=5+5²+5³=1+25+125=155