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Efectuati: radical 3 + radical 12 + radical 27 + radical 48 +...+ radical 300​

Răspuns :

Salutare :)

R=radical

R3+R12+R27+R48+...+R300=

=R3+2R3+3R3+4R3+..+10R3

1+2+3+4+...+10=10×11:2=110:2=55

=> RĂSPUNSUL=55R3

Succes! :)