\[9^4 = (9^2)^2 = 81^2 = 6561\]
\[7^4 = (7^2)^2 = 49^2 = 2401\]
\[8^6 = (8^3)^2 = 512^2 = 262144\]
\[3^8 = (3^4)^2 = 81^2 = 6561\]
\[6^4 + 5^4 = (6^2)^2 + (5^2)^2 = 36^2 + 25^2 = 1296 + 625 = 1921\]
\[8^4 - 3^4 = (8^2)^2 - (3^2)^2 = 64^2 - 9^2 = 4096 - 81 = 4015\]
\[6 \cdot 7^4 = 6 \cdot (7^2)^2 = 6 \cdot 49^2 = 6 \cdot 2401 = 14406\]
\[-9 \cdot 4^6 = -9 \cdot (4^3)^2 = -9 \cdot 64^2 = -9 \cdot 4096 = -36864\]
Ответы: а) 6561; б) 2401; в) 262144; г) 6561; д) 1921; e) 4015; ж) 14406; з) -36864