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Determinati termenul necunoscut x stiind ca 2^31+2^30+2^29=x ori 2^28.

Răspuns :

2^31+2^30+2^29=x ori 2^28
dam factor comun
2^29×(2^2 + 2^1 + 1) = x × 2^28

2^29 × (4 + 2 + 1) = x × 2^28

2^29 × 7 = x × 2^28

x = 7 × 2^29 : 2^28

x = 7 × 2^29-28

x = 7 × 2^1

x = 14