Question

3^21-2×3^20 va rog frumos multumesc

Answer 1

${3}^{21} - 2 \times {3}^{20} = {3}^{20} \times (3 - 2) = {3}^{20} \\ {3}^{20} =3,486,784,401$

Answer 2

=3²⁰×(3−2)=

3²⁰×1= 3²⁰