Question

Exercițiul 19 va rog

Answer 1

$\it a=8\cdot10^n=2^3\cdot10^n\\ \\ b=2\cdot10^{n+1}=2\cdot10\cdot10^n=20\cdot10^n=2^2\cdot5\cdot10^n\\ \\ c=10^{n+2}=10^2\cdot10^n =100\cdot10^n=2^2\cdot5^2\cdot10^n$

[a,  b,  c] = 2³·5²·10ⁿ =8·25·10ⁿ  =400·10ⁿ =4·100·10ⁿ =4·10²·10ⁿ=

=4·10ⁿ⁺²