Fie nr.:
A=10²ⁿ:(4∙25)ⁿ¯¹ ∙x, unde n apartine lui IN


B= 51∙ 50 - 50∙49 + 49∙48- 48∙47+……….+3∙2 -2∙1



Determinati nr. intreg x astfel incat nr. a si b sa fie nr. intregi opuse.

1

Răspunsuri

2014-06-21T21:45:35+03:00
A=10²÷(4·25)-1·x minus 1 vine sus nu lam putut pune jos
N∈B 100÷(4·25)-1·X=100÷+26·×
=100÷+26·×
X=100·+26=2600
B=51·50-50·49·48-48·47+2600+3·2-2·1=55272,0692