а) 8⁶ / 8⁴ = 8^(6-4) = 8² = 64;
б) 0,8⁷ / 0,8⁴ = 0,8^(7-4) = 0,8³ = 0,512;
в) (-0,3)⁵ / (-0,3)³ = (-0,3)^(5-3) = (-0,3)² = 0,09;
г) (1 1/2)⁴ / (1 1/2)² = (3/2)⁴ / (3/2)² = (3/2)^(4-2) = (3/2)² = 9/4 = 2 1/4;
д) (-2 1/2)⁶ / (-2 1/2)¹ = (-5/2)⁶ / (-5/2)¹ = (-5/2)^(6-1) = (-5/2)⁵ = -3125/32 = -97 21/32;
Ответ: а) 64; б) 0,512; в) 0,09; г) 2 1/4; д) -97 21/32