Question

2⁵¹+2⁵²+2⁵³=x×2⁵⁰ x=? ​

Answer 1

Răspuns:

2⁵¹+2⁵²+2⁵³= x•2⁵⁰

(1+2+2²)•2^51 = 2^50•x

(1+2+4)•2^51 = 2^50•x

x = 2^51•7:2^50

x = 7•2^(51-50)

x = 7•2

x = 14.

==EVERGREEN==

Answer 2

2⁵¹ + 2⁵² + 2⁵³ = x × 2⁵⁰

(1 + 2 + 2²)2⁵¹ = 2⁵⁰x

7 × 2⁵¹ = 2⁵⁰x

2⁵⁰x = 7 × 2⁵¹ → x = 7 × 2⁵¹ : 2⁵⁰

x = 7 × 2⁵¹-⁵⁰ = 7 × 2 = 14