Va rog urgentt!!!!!!!

Răspuns:
2³¹ + 2³⁰ + 2²⁹ = x • 2²⁸
= (2² + 2 +1) • 2²⁹ = x • 2²⁸
= ( 2² + 2 +1 ) • 2²⁹ = 2²⁸ • x
= (4 + 2 + 1 ) • 2²⁹ = 2²⁸ • x
= 7 • 2²⁹ = 2²⁸ • x
= x = 7 • 2²⁹: 2²⁸
= x = 7 • 2²⁹‐²⁸
= x = 7 • 2¹ => x = 7 • 2 => x = 14