Question

2 la puterea 51 + 2 la.puterea 52 + 2 la puterea 53 = x ×2 la puterea 50

Answer 1

2^51 + 2^52 + 2^53 = x × 2^50

2^51 × ( 1 + 2^1 + 2^2) = x × 2^50

2^51 × (1 + 2 + 4) = x × 2^50

2^51 × 7 = x × 2^50

x = 2^51 : 2^50 × 7

x = 2^1 × 7

x = 14
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