Question

Comparați numerele:
a=$( {9}^{11} - {9}^{10} ) \times ( {9}^{10} - {9}^{9} ) \times ... \times ( {9}^{2} - 9)$
b=${3}^{131}$

Answer 1

a= 9¹ × 9¹ ×........ × 9¹      de 10 ori
a= 9¹⁺¹⁺¹⁺.....⁺¹ = 9¹⁰ = (3²)¹⁰ = 3²⁰
a = 3²⁰   si   b = 3¹³¹
20  ∠  131
a  ∠   b