👤

Determina x din egalitatea : x+ 2 la 0 •( 2 la 1990 • 2+ 2 la 1991 + 2 la 1992 ) = 2 la 1994 .

Răspuns :

x+ 2⁰•( 2¹⁹⁹⁰ • 2+ 2¹⁹⁹¹ + 2¹⁹⁹²) = 2¹⁹⁹⁴
x+ 1•( 2¹⁹⁹¹+ 2¹⁹⁹¹ + 2¹⁹⁹²) = 2¹⁹⁹⁴
x+ [ 2¹⁹⁹¹(1+1) + 2¹⁹⁹²] = 2¹⁹⁹⁴
x+ [ 2¹⁹⁹¹×2 + 2¹⁹⁹²] = 2¹⁹⁹⁴
x+ ( 2¹⁹⁹² + 2¹⁹⁹²) = 2¹⁹⁹⁴
x+  2¹⁹⁹² × 2 = 2¹⁹⁹⁴
x+  2¹⁹⁹³ = 2¹⁹⁹⁴
x  = 2¹⁹⁹⁴-2¹⁹⁹³
x  = 2¹⁹⁹³(2-2⁰)
x  = 2¹⁹⁹³(2-1)
x  = 2¹⁹⁹³