Tính: (‒0,25)^4.4^4.
Giải thích
(‒0,25)4.44
\[ = {\left( { - \frac{1}{4}} \right)^4} \cdot {4^4}\]
\[ = {\left( { - \frac{1}{4} \cdot 4} \right)^4}\]
\[ = {\left( { - \frac{4}{4}} \right)^4}\]
= (‒1)4 = 1.
(‒0,25)4.44
\[ = {\left( { - \frac{1}{4}} \right)^4} \cdot {4^4}\]
\[ = {\left( { - \frac{1}{4} \cdot 4} \right)^4}\]
\[ = {\left( { - \frac{4}{4}} \right)^4}\]
= (‒1)4 = 1.