Question

(12 la putere a 2-11 la putere a 2):1 la puterea 20

Answer 1

$( {12}^{2} - {11}^{2} ) \div {1}^{20} = (144 - 121) \div 1 = 23 \div 1 = 23$

Answer 2

12 la 2=244
11 la 2= 121
1 la 20= 1