Răspuns :
81 = 9 · 9 = 3² · 3² = 3⁴
27 = 3³
81¹⁰ = ( 3⁴ )¹⁰ = 3⁴⁰
27¹² = ( 3³ )¹² = 3³⁶
81¹⁰ / 27¹² = 3⁴⁰ ⁻ ³⁶ = 3⁴ = 81
27 = 3³
81¹⁰ = ( 3⁴ )¹⁰ = 3⁴⁰
27¹² = ( 3³ )¹² = 3³⁶
81¹⁰ / 27¹² = 3⁴⁰ ⁻ ³⁶ = 3⁴ = 81
[tex] \frac{ 81^{10} }{ 27^{12} }= \\ 81= 3^{4} \\ 27= 3^{3} \\ 27^{12}=( 3^{3}) ^{12}= 3^{36} \\ 81^{10}=( 3^{4}) ^{10}= 3^{40} \\ \frac{81 ^{10} }{27 ^{12} }= 3^{40-36}=3 ^{4}=3*3*3*3 =\ \textgreater \ \boxed{81}[/tex]