Răspunsuri

  • Utilizator Brainly
2014-09-10T14:06:10+03:00
9·(5+10+15+...+200) : 41=
9*5*(1+2+3+...+40):41=
=45*(40*41:2):41=
=45*20*41:41=
=45*20=900=30²
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