Răspunsuri

2014-10-07T17:21:50+03:00
x+2*x-3*x+........+1000*x = 50.500
X(1+2+3+...+1000)=50500
X(1000*1001:2)=50500
x*500500=50500
x=50500/500500
x=0.1008991

tu?
si eu
bara ce vine
eu scriu aporape cum a scris ea dar fac 500500-50500= cu nush cat
bara ce inseaman???